Oh! Very clever! Now we have an equilateral triangle. Three sides of equal length andall the angles are 60 degrees. This is a scalene triangle. All the sides are different lengths and each angle ...

It's possible to demonstrate and prove mathematically that the angle sum of every triangle is 180 degrees. The techniques used are useful for solving all kinds of other geometry problems too.

Two congruent angles are simply pairs of angles with equal measures. You can find congruent angles examples in hundreds of everyday objects. For instance, think of any time you've tried to draw a ...