Triangle and Angle Properties

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees

Front

What is the measure of each angle in an equilateral triangle?

Back

60 degrees

Front

What is the measure of the missing angle if one angle is 90 degrees and another is 45 degrees?

Back

45 degrees

Front

In a right triangle, what is the relationship between the angles?

Back

One angle is 90 degrees, and the other two angles are complementary (sum to 90 degrees).

Front

What is an isosceles triangle?

Back

A triangle with at least two equal sides and two equal angles.

Front

What is the exterior angle theorem?

Back

The exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Front

If one angle of a triangle is 50 degrees and another is 60 degrees, what is the third angle?

Back

70 degrees

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.