Interior and Exterior Angles of Triangles

Front

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Back

180°

Front

What is the value of the missing angle if two angles are 75° and 60°?

Back

105°

Front

Find x if the angles in a triangle are 45°, 42°, and x°.

Back

93°

Front

Find the measure of the missing angle if one angle is 40° and another is 90°.

Back

50°

Front

Which of the following angles can you add together to equal angle d? Angle a and Angle b, Angle b and Angle c, Angle a and Angle c, Angle a and Angle b and Angle c.

Back

Angle a and Angle b

Front

What is an interior angle of a triangle?

Back

An interior angle is formed by two sides of the triangle and is located inside the triangle.

Front

What is an exterior angle of a triangle?

Back

An exterior angle is formed by one side of the triangle and the extension of an adjacent side.

Front

How do you calculate an exterior angle of a triangle?

Back

An exterior angle is equal to the sum of the two opposite interior angles.

Front

If one angle of a triangle is 60° and another is 30°, what is the third angle?

Back

90°

Front

What is the relationship between interior and exterior angles?

Back

The exterior angle is equal to the sum of the two non-adjacent interior angles.