Solving Angles of Triangle

Front

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

Back

180 degrees

Front

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

Back

Right triangle

Front

What is an exterior angle of a triangle?

Back

An exterior angle is equal to the sum of the two opposite interior angles.

Front

If two angles of a triangle are 50 degrees and 60 degrees, what is the third angle?

Back

70 degrees

Front

What is the formula to find the missing angle in a triangle?

Back

180 degrees - (sum of the known angles)

Front

In a triangle, if one angle is 40 degrees and the other is 100 degrees, what is the value of the third angle?

Back

40 degrees

Front

What is the relationship between the angles in a triangle?

Back

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

Front

If x is an exterior angle of a triangle, and the two opposite interior angles are 30 degrees and 50 degrees, what is the value of x?

Back

80 degrees

Front

How do you find the measure of an angle when given the other two angles in a triangle?

Back

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

Front

What is the definition of an acute triangle?

Back

A triangle where all angles are less than 90 degrees.