作者:小雅和英美友人
三角形-美国朋友语音示范00:39来自你和宝宝说英语
(1) Right triangle
直角三角形
A right triangle has 1 right angle which is 90 degrees.
直角三角形有一个直角,也就是90度的角。
(2) Isosceles triangle
等腰三角形
An isosceles triangle has two angles that are the same degree and two sides of the same length.
等腰三角形有两个度数相等的角和两条长度相等的边。
(3) Equilateral triangle
等边三角形
An equilateral triangle is a triangle that has 3 equal angles and 3 equal sides.
等边三角形有三个相等的角和三个相等的边。