Angle Relationships and Triangles

Front

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

Back

180 degrees

Front

What do we call two angles that add up to 90 degrees?

Back

Complementary angles

Front

What do we call two angles that add up to 180 degrees?

Back

Supplementary angles

Front

If one angle measures 30 degrees, what is the measure of its complementary angle?

Back

60 degrees

Front

If two angles are supplementary and one measures 120 degrees, what is the measure of the other angle?

Back

60 degrees

Front

In a right triangle, what is the measure of the right angle?

Back

90 degrees

Front

What is the relationship between the angles in an isosceles triangle?

Back

Two angles are equal.

Front

If a triangle has angles measuring 50 degrees and 60 degrees, what is the measure of the third angle?

Back

70 degrees

Front

What is the term for a triangle with all sides of different lengths?

Back

Scalene triangle

Front

What is the term for a triangle with one angle greater than 90 degrees?

Back

Obtuse triangle