Missing Angles in Triangles

Front

If 2 of the angles of a triangle are 30 and 70 degrees, what is the measure of the third angle?

Back

80 degrees

Front

Find the measure of the missing angle in a triangle if the other two angles are 75° and 80°.

Back

25°

Front

Find the measure of the missing angle in a triangle if the other two angles are 45° and 69°.

Back

66°

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

How many equal sides does an equilateral triangle have?

Back

3

Front

What is the sum of all angles in a triangle?

Back

180 degrees

Front

What do you call an angle less than 90 degrees?

Back

acute angle

Front

What do you call an angle greater than 90 degrees but less than 180 degrees?

Back

obtuse angle

Front

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

Back

right triangle

Front

In a triangle, if one angle measures 60 degrees and another measures 60 degrees, what is the measure of the third angle?

Back

60 degrees