Triangle Sum Theorem

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 measures 60 degrees and another measures 70 degrees, what is the measure of the third angle?

Back

The third angle measures 50 degrees, calculated as 180 - (60 + 70).

Front

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

Back

Each angle in an equilateral triangle measures 60 degrees.

Front

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

Back

To find a missing angle, subtract the sum of the known angles from 180 degrees.

Front

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

Back

In a right triangle, one angle measures 90 degrees, and the sum of the other two angles is 90 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 measure of the angles in a triangle with angles measuring 45 degrees and 45 degrees?

Back

The third angle measures 90 degrees, making it a right isosceles triangle.

Front

In a triangle, if one angle measures 135 degrees, what can you say about the other two angles?

Back

The other two angles must sum to 45 degrees, as the total must equal 180 degrees.

Front

What is the measure of the angles in a triangle with angles measuring 30 degrees and 60 degrees?

Back

The third angle measures 90 degrees, making it a right triangle.

Front

If a triangle has angles measuring 80 degrees and 25 degrees, what is the measure of the third angle?

Back

The third angle measures 75 degrees, calculated as 180 - (80 + 25).