Angle Sum

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If one angle of a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle with at least two equal sides and two equal angles.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides and all three angles are equal, each measuring 60 degrees.

Front

How do you find the third angle of a triangle if you know the other two angles?

Back

Subtract the sum of the two known angles from 180 degrees.

Front

What is a scalene triangle?

Back

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

Front

What is the relationship between parallel lines and angles?

Back

Parallel lines never intersect and have the same slope.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose sum is 90 degrees.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose sum is 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.