right angle triangle 直角三角形
acute-angle triangle acute triangle 锐角三角形
small-angle triangle 小角度三角形
right-angle triangle method 直角三角形法
angle triangle acute triangle 锐角三角形
Right Angle Equals to Triangle 直角等于三角
right angle spherical triangle 球面直角三角形
For example the square on hypotenuse of a right Angle triangle is equal to the sum of the squares of the other two sides.
例如，直角三角形斜边的平方，等于其它两边的平方和。
The language angel hanged up the gang and banged them at the Angle of the triangle.
语文天使将那伙人吊起朝三角形的角上猛撞。
An equilateral triangle has all sides equal and all angles equal. A right triangle has one Angle equal to 90 degrees.
等边三角形三边相等三内角相等。直角三角形有一个角等于90度。
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