Triangle Sum Theorem ACA

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of 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 the measure of the third angle in a triangle if the first two angles are 50 degrees and 60 degrees?

Back

70 degrees.

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the measure of the angles in an equilateral triangle?

Back

Each angle measures 60 degrees.

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.

Front

What is the relationship between the angles in a right triangle?

Back

One angle is 90 degrees, and the sum of the other two angles is 90 degrees.

Front

If angle A is 44 degrees and angle B is 96 degrees, what is angle C?

Back

Angle C is 40 degrees.

Front

What is the formula to find the measure of an exterior angle of a triangle?

Back

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

Front

In a triangle, if one angle measures 130 degrees, what can you say about the other two angles?

Back

The other two angles must each be less than 50 degrees, as their sum must equal 50 degrees.