本篇文章给大家谈谈等边三角形有几条对称轴,以及等腰三角形的对称轴对应的知识点,希望对各位有所帮助,不要忘了收藏本站!

内容导航:

Q1:三角形有几条对称轴

具体看是什么三角形。


不等边三角形,没有对称轴;


等腰三角形,一条对称轴;


等边三角形,三条对称轴。


等腰三角形的对称轴是经过顶点和底边中心的直线,只有一条,如下:


等边三角形的对称轴是经过任一顶点和其对边中点的直线,有三条,如下:


扩展资料:


在平面上三角形的内角和等于180°(内角和定理)。在平面上三角形的外角和等于360° (外角和定理)。在平面上三角形的外角等于与其不相邻的两个内角之和。


一个三角形的三个内角中最少有两个锐角。在三角形中至少有一个角大于等于60度,也至少有一个角小于等于60度。三角形任意两边之和大于第三边,任意两边之差小于第三边。


如果一个三角形的两条边与另一个三角形的两条边对应成比例,并且夹角相等,那么这两个三角形相似(简称:两边对应成比例且其夹角相等的两三角形相似)。


如果一个三角形的两个角分别与另一个三角形的两个角对应相等,那么这两个三角形相似(简称:两角对应相等的两三角形相似)。

Q2:等边三角形是轴对称图形吗?它有几条对称轴

解答:是,有三条

分析: 等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线

或角的平分线所在的直线。

如图所示:

【希望我的回答对您有所帮助!】

Q3:等边三角形有几条对称轴

等边三角形有3条对称轴,

分别为三边的高,

也是过边中点并垂直于边的直线

同时也是角平分线。

Q4:请问 等边三角形有几条对称轴啊?

3条。


等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


轴对称的判定:如果两个图形的对应点连线被同一条直线垂直平分,那么这两个图形关于这条直线对称。


1、如果两个图形关于某条直线对称,那么对称轴是任何一对对应点所连线段的垂直平分线。


2、类似地,轴对称图形的对称轴,是任何一对对应点所连线段的垂直平分线。


3、线段的垂直平分线上的点与这条线段的两个端点的距离相等。 


4、对称轴是到线段两端距离相等的点的集合。


扩展资料


等边三角形的性质:


(1)等边三角形是锐角三角形,等边三角形的内角都相等,且均为60°。


(2)等边三角形每条边上的中线、高线和角平分线互相重合。(三线合一)


(3)等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


(4)等边三角形重心、内心、外心、垂心重合于一点,称为等边三角形的中心。(四心合一)


(5)等边三角形内任意一点到三边的距离之和为定值。(等于其高)


(6)等边三角形拥有等腰三角形的一切性质。(因为等边三角形是特殊的等腰三角形)


参考资料来源:百度百科-等边三角形

Q5:等边三角形有几条对称轴

等边三角形(又称正三边形),为三边相等的三角形,其三个内角相等,均为60°,它是锐角三角形的一种。那么等边三角形有几条对称轴呢?

等边三角形有几条对称轴

1、等边三角形有三条对称轴。

2、等边三角形是轴对称图形,有三条对称轴,对称轴是每条边上的中线、高线或角的平分线所在的直线。

以上就是给各位带来的关于等边三角形有几条对称轴的全部内容了。

Q6:等边三角形有几条对称轴,为什么?

三条对称轴,任意一条边上的中线或高线,或任意一个角的平分线都是其对称轴,因为三角形的中线,或高线或角平分线都有三条,所以等边三角形的对称轴有三条。

关于等边三角形有几条对称轴和等腰三角形的对称轴的介绍到此就结束了,不知道你从中找到你需要的信息了吗?如果你还想了解更多这方面的信息,记得收藏关注本站。

查看更多关于等边三角形有几条对称轴的详细内容...

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本篇文章给大家谈谈等边三角形有几条对称轴,以及等腰三角形的对称轴对应的知识点,希望对各位有所帮助,不要忘了收藏本站!

内容导航:

Q1:三角形有几条对称轴

具体看是什么三角形。


不等边三角形,没有对称轴;


等腰三角形,一条对称轴;


等边三角形,三条对称轴。


等腰三角形的对称轴是经过顶点和底边中心的直线,只有一条,如下:


等边三角形的对称轴是经过任一顶点和其对边中点的直线,有三条,如下:


扩展资料:


在平面上三角形的内角和等于180°(内角和定理)。在平面上三角形的外角和等于360° (外角和定理)。在平面上三角形的外角等于与其不相邻的两个内角之和。


一个三角形的三个内角中最少有两个锐角。在三角形中至少有一个角大于等于60度,也至少有一个角小于等于60度。三角形任意两边之和大于第三边,任意两边之差小于第三边。


如果一个三角形的两条边与另一个三角形的两条边对应成比例,并且夹角相等,那么这两个三角形相似(简称:两边对应成比例且其夹角相等的两三角形相似)。


如果一个三角形的两个角分别与另一个三角形的两个角对应相等,那么这两个三角形相似(简称:两角对应相等的两三角形相似)。

Q2:等边三角形是轴对称图形吗?它有几条对称轴

解答:是,有三条

分析: 等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线

或角的平分线所在的直线。

如图所示:

【希望我的回答对您有所帮助!】

Q3:等边三角形有几条对称轴

等边三角形有3条对称轴,

分别为三边的高,

也是过边中点并垂直于边的直线

同时也是角平分线。

Q4:请问 等边三角形有几条对称轴啊?

3条。


等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


轴对称的判定:如果两个图形的对应点连线被同一条直线垂直平分,那么这两个图形关于这条直线对称。


1、如果两个图形关于某条直线对称,那么对称轴是任何一对对应点所连线段的垂直平分线。


2、类似地,轴对称图形的对称轴,是任何一对对应点所连线段的垂直平分线。


3、线段的垂直平分线上的点与这条线段的两个端点的距离相等。 


4、对称轴是到线段两端距离相等的点的集合。


扩展资料


等边三角形的性质:


(1)等边三角形是锐角三角形,等边三角形的内角都相等,且均为60°。


(2)等边三角形每条边上的中线、高线和角平分线互相重合。(三线合一)


(3)等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


(4)等边三角形重心、内心、外心、垂心重合于一点,称为等边三角形的中心。(四心合一)


(5)等边三角形内任意一点到三边的距离之和为定值。(等于其高)


(6)等边三角形拥有等腰三角形的一切性质。(因为等边三角形是特殊的等腰三角形)


参考资料来源:百度百科-等边三角形

Q5:等边三角形有几条对称轴

等边三角形(又称正三边形),为三边相等的三角形,其三个内角相等,均为60°,它是锐角三角形的一种。那么等边三角形有几条对称轴呢?

等边三角形有几条对称轴

1、等边三角形有三条对称轴。

2、等边三角形是轴对称图形,有三条对称轴,对称轴是每条边上的中线、高线或角的平分线所在的直线。

以上就是给各位带来的关于等边三角形有几条对称轴的全部内容了。

Q6:等边三角形有几条对称轴,为什么?

三条对称轴,任意一条边上的中线或高线,或任意一个角的平分线都是其对称轴,因为三角形的中线,或高线或角平分线都有三条,所以等边三角形的对称轴有三条。

关于等边三角形有几条对称轴和等腰三角形的对称轴的介绍到此就结束了,不知道你从中找到你需要的信息了吗?如果你还想了解更多这方面的信息,记得收藏关注本站。

查看更多关于等边三角形有几条对称轴的详细内容...

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美国指责古巴向委内瑞拉派遣军队 古官员驳斥美方说法

等腰三角形的对称轴(请问 等边三角形有几条对称轴啊)******<p><img src=

本篇文章给大家谈谈等边三角形有几条对称轴,以及等腰三角形的对称轴对应的知识点,希望对各位有所帮助,不要忘了收藏本站!

内容导航:
  • 三角形有几条对称轴
  • 等边三角形是轴对称图形吗?它有几条对称轴
  • 等边三角形有几条对称轴
  • 请问 等边三角形有几条对称轴啊?
  • 等边三角形有几条对称轴
  • 等边三角形有几条对称轴,为什么?

Q1:三角形有几条对称轴

具体看是什么三角形。


不等边三角形,没有对称轴;


等腰三角形,一条对称轴;


等边三角形,三条对称轴。


等腰三角形的对称轴是经过顶点和底边中心的直线,只有一条,如下:


等边三角形的对称轴是经过任一顶点和其对边中点的直线,有三条,如下:


扩展资料:


在平面上三角形的内角和等于180°(内角和定理)。在平面上三角形的外角和等于360° (外角和定理)。在平面上三角形的外角等于与其不相邻的两个内角之和。


一个三角形的三个内角中最少有两个锐角。在三角形中至少有一个角大于等于60度,也至少有一个角小于等于60度。三角形任意两边之和大于第三边,任意两边之差小于第三边。


如果一个三角形的两条边与另一个三角形的两条边对应成比例,并且夹角相等,那么这两个三角形相似(简称:两边对应成比例且其夹角相等的两三角形相似)。


如果一个三角形的两个角分别与另一个三角形的两个角对应相等,那么这两个三角形相似(简称:两角对应相等的两三角形相似)。

Q2:等边三角形是轴对称图形吗?它有几条对称轴

解答:是,有三条

分析: 等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线

或角的平分线所在的直线。

如图所示:

【希望我的回答对您有所帮助!】

Q3:等边三角形有几条对称轴

等边三角形有3条对称轴,

分别为三边的高,

也是过边中点并垂直于边的直线

同时也是角平分线。

Q4:请问 等边三角形有几条对称轴啊?

3条。


等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


轴对称的判定:如果两个图形的对应点连线被同一条直线垂直平分,那么这两个图形关于这条直线对称。


1、如果两个图形关于某条直线对称,那么对称轴是任何一对对应点所连线段的垂直平分线。


2、类似地,轴对称图形的对称轴,是任何一对对应点所连线段的垂直平分线。


3、线段的垂直平分线上的点与这条线段的两个端点的距离相等。 


4、对称轴是到线段两端距离相等的点的集合。


扩展资料


等边三角形的性质:


(1)等边三角形是锐角三角形,等边三角形的内角都相等,且均为60°。


(2)等边三角形每条边上的中线、高线和角平分线互相重合。(三线合一)


(3)等边三角形是轴对称图形,它有三条对称轴,对称轴是每条边上的中线、高线 或角的平分线所在的直线。


(4)等边三角形重心、内心、外心、垂心重合于一点,称为等边三角形的中心。(四心合一)


(5)等边三角形内任意一点到三边的距离之和为定值。(等于其高)


(6)等边三角形拥有等腰三角形的一切性质。(因为等边三角形是特殊的等腰三角形)


参考资料来源:百度百科-等边三角形

Q5:等边三角形有几条对称轴

等边三角形(又称正三边形),为三边相等的三角形,其三个内角相等,均为60°,它是锐角三角形的一种。那么等边三角形有几条对称轴呢?

等边三角形有几条对称轴

1、等边三角形有三条对称轴。

2、等边三角形是轴对称图形,有三条对称轴,对称轴是每条边上的中线、高线或角的平分线所在的直线。

以上就是给各位带来的关于等边三角形有几条对称轴的全部内容了。

Q6:等边三角形有几条对称轴,为什么?

三条对称轴,任意一条边上的中线或高线,或任意一个角的平分线都是其对称轴,因为三角形的中线,或高线或角平分线都有三条,所以等边三角形的对称轴有三条。

关于等边三角形有几条对称轴和等腰三角形的对称轴的介绍到此就结束了,不知道你从中找到你需要的信息了吗?如果你还想了解更多这方面的信息,记得收藏关注本站。

查看更多关于等边三角形有几条对称轴的详细内容...

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美国指责美方说法The cultural center of the Jinpu New Area also arranged some courses for them to know about other traditional Chinese culture such as Chinese calligraphy, seal cutting, folk dance, paper-cutting, and pottery

古巴向委官员驳斥"He wanted to go to the inland provinces, and he had some knowledge of Anhui, so he chose Hefei as his destination," Cho said内瑞拉派Half a year later, Park returned to Hefei University and has been there ever since

美国指责古巴向委内瑞拉派遣军队 古官员驳斥美方说法

遣军队古Some of the South Korean companies based in the two zones, the largest in the province, were attracted through Cho's efforts美国指责美方说法In the runup to the meeting, China Daily asked a prominent South Korean teacher to talk about her experiences in promoting educational improvements, business cooperation and people-to-people understanding in her native country and her adopted home古巴向委官员驳斥And she was the first South Korean citizen to gain permanent residency in China in 2006内瑞拉派The boy - a great fan of Chinese history who was able to give the names of more than 900 figures in the Chinese classic Romance of Three Kingdoms - was inspired and wanted very much to follow the suggestion遣军队古President Xi puts a lot of emphasis on environmental protection

美国指责美方说法What's the most memorable experience you've had in China, or related to China? Unforgettable experiences in China are many古巴向委官员驳斥It also extends to boosting Sino-South Korean economic ties and helping the province's poverty-stricken areas内瑞拉派One sign says you're looking at 45,485 pounds of added sugar - the amount that Kind says children in the United States consume every five minutes

遣军队古As early as 2006 the Centers for Disease Control and Prevention (CDC) identified sugar drinks as one of the main culprits in rising obesity rates美国指责美方说法The numbers are spun out by Kind from there: children consume 13古巴向委官员驳斥"In addition, I have found that sugar imports are increasing内瑞拉派Until the 18th century, when the technology for extracting sugar from cane was developed, and 19th century, when we learned how to get it from beets, sugar was only available when the fruit ripened or the bees got busy

About 12 percent of children aged 7 to 18 in the survey were overweightJudy Zhu / China DailyA 24-foot-tall pyramid of boxes marked "sugar" in the middle of Times Square makes a point that's kind of hard to ignore

美国指责古巴向委内瑞拉派遣军队 古官员驳斥美方说法

The world does consume too much "added sugar" - a term the USDA began using in 2000 to help people spot processed foods that have added energy with no added nutrition"Every country that has adopted the Western diet, one dominated by low-cost, highly processed food, has witnessed rising rates of obesity and related diseases," the journal Nature commented recentlyHigh fructose corn syrup, raw, brown and white sugar, honey, maple syrup, molasses make up about 16 percent of the calories Americans consume and have zero nutritional valueAs the researchers in Nature put it: "In recent years, sugar has been added to virtually every processed food, limiting consumer choice

5 million children in the US are obese, the CDC says, blaming snacks and foods high in sugar and saltFor children aged four to eight, the AHA suggests no more than three teaspoons of sugar a day, about 130 calories of a 1,600-calorie diet1 million pounds of added sugar a day - enough to fill 273 yellow school busesA can of soda has the equivalent of seven to 12 teaspoons of sugar

"A report from a survey of 14 provinces in China found that the daily intake of sugars for Chinese people was lower than the level recommended by the World Health Organization, but for children between the ages of 3 and 17 it was much higher because of the growing popularity of sugary drinks, China Daily reported in MayA display in Times Square includes a sugar tower that is 15 feet wide by 24 feet high

美国指责古巴向委内瑞拉派遣军队 古官员驳斥美方说法

It is made of cartons depicting more than 45,000 pounds of sugar, surrounded by life-size models of "crystallized" childrenThe top domestic consumers, in descending order, are India, the EU, China, the US and Brazil

Standing sentinel around the mound are ghostly sculptures of small children, apparently made out of sugar-like granular material, wearing tags that read: "I am 9 years old and weigh 64 poundsAccording to the National Soft Drink Association, the industry produces 600 12-ounce cans of sugary drinks per person per year, most of it what they call the full-sugar variety, and supplies more than a quarter of what Americans drinkThe publicity stunt, created by Magnetic Collaborative agency to promote power bar-maker Kind's new line of fruit snacks, which have no added sugar, is meant to sound an alarmIn descending order, Brazil, India, the EU, Thailand, China and the US are the top producersThe survey, conducted in 2014 by China's health, education and sports authorities, found that the sugar intake of males 13 to 17 surpassed 8"There are now 30 percent more people who are obese than who are undernourished

The average child takes in 21 teaspoons a day, the AHA saysThe white paper went to great lengths to define China as one of the "destabilizing factors" along with Democratic People's Republic of Korea

It highlighted "more tangible" and "acute" challenges and destabilizing factorsThe legislation provides greater flexibility, responsiveness, and interoperability for training, exercises, and planning on a broader spectrum of security issues by easing restrictions on Japanese Self-Defense Force operations, including the ability to exercise collective self-defense

This will empower Japan to be an active player at the region and global stagesThe white paper, the first after Japan's security legislation went into effect in March, played up the so-called "gray zone" situations, or neither pure peacetime nor contingencies over territory, sovereignty and economic interests

In its 2016 defense white paper, Japan interferes in the South China SeaThe white paper served as an implementation scheme for the controversial security bills that enable Japan's Self-Defense Forces to play a more comprehensive global military role and allow implementation of the new US and Japan alliance guidelinesIt made irresponsible accusations against China, claiming that China continues to act in an "assertive" manner, including attempts at changing the status quo by coercioncn]On August 2, Japanese government approved this year's version of defense white paper, which described the security environment surrounding the country "increasingly severe"

China's "dangerous acts" in the South China Sea and East China Sea could cause unintended consequences(To overblow Chinese ship's entry, Japan's foreign ministry summoned Chinese Ambassador to Japan Cheng Yonghua in the tee hours of that day, and lodged a protest

)Refusing to have a territorial dispute in the East China Sea, Japan is unlikely to talk with China over its settlement, leaving the waters near the islands a minefieldThe Japanese Maritime Self-Defense Force destroyer Hatakaze quickly followed them into that area

In response to the Hatakaze's entry, the Chinese Jiangkai I-class frigate rushed into the waters, according to the Japanese weekly Nikkei Asian ReviewHiding the first part of the episode, the white paper criticized China for its frigate's entry into Japan's "contiguous" zone near the disputed islets in the East China Sea

On June 8, three Russian naval ships entered the waters close to the Diaoyu IslandsThe defense legislation eliminates geographic constraints by substituting a situational threshold (situations that "gravely affect the peace and stability of Japan") rather than limiting support to "situations in areas surrounding Japan"Iowa's ties with China had already shown signs of increasingEven though Iowa is best known for its agricultural products and services, Reynolds said that advanced manufacturing is "actually the largest sector of our GDP

Reynolds said last month when announcing the trip that "there is no better time than now to market and pitch our products in China"We believe as a united Iowa agricultural delegation, we can find opportunities that are beneficial to both China and Iowa," Reynolds said

According to Allen Williams, the business development manager at the Iowa Economic Development Authority, the state has had more inquiries from China in recent months than in the previous two or three yearsOur relationship with the country is strong, and their growing middle class means increasing purchasing power, and Iowa stands to gain significantly as a result

US beef had been banned from China since 2003 due to a mad cow disease scare" When Branstad was receiving a Chinese trade delegation as Iowa governor in March, he remarked that he would like to be able to enjoy a bite of US beef at the US embassy in Beijing

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