ABC is an equilateral triangle.
Determine the size of angle ?
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ABC is an equilateral triangle.
Determine the size of angle ?
In order to solve this exercise, we need to be aware of two important laws-
1: In an equilateral triangle, all angles are equal.
2: The sum of angles in a triangle is 180.
Let's begin by defining the angle size as X.
We know that all angles are equal, and together they equal 180 degrees, therefore:
3X=180
Divide by 3
X=60
Hence the angle size is 60 degrees!
60°
In a right triangle, the side opposite the right angle is called....?
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