Interior Angles of Triangles

Front

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

Back

180°

Front

If one angle of a triangle is 90° and another is 60°, what is the measure of the third angle?

Back

30°

Front

In a triangle, if two angles measure 45° each, what is the measure of the third angle?

Back

90°

Front

If a triangle has angles measuring 70° and 50°, what is the measure of the third angle?

Back

60°

Front

What do you call a triangle with one angle measuring more than 90°?

Back

Obtuse triangle

Front

What do you call a triangle with all angles measuring less than 90°?

Back

Acute triangle

Front

What do you call a triangle with one angle measuring exactly 90°?

Back

Right triangle

Front

If the angles of a triangle are represented as x, y, and z, what equation represents the relationship between them?

Back

x + y + z = 180°

Front

In a triangle, if one angle measures 40° and another measures 100°, what is the measure of the third angle?

Back

40°

Front

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

Back

60°