Interior Angles of Triangles

Front

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

Back

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 each interior angle in an equilateral triangle?

Back

Each interior angle in an equilateral triangle measures 60 degrees.

Front

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

Back

You can find the measure of an unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is the relationship between the angles in a triangle?

Back

The angles in a triangle are related such that their sum equals 180 degrees.

Front

If two angles of a triangle are known, how can you find the third angle?

Back

You can find the third angle by subtracting the sum of the two known angles from 180 degrees.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length, which also means two angles are equal.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides and all three angles are different.

Front

What is the exterior angle theorem?

Back

The exterior angle theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two opposite interior angles.

Front

How do you classify triangles based on their angles?

Back

Triangles can be classified as acute (all angles less than 90 degrees), right (one angle is 90 degrees), or obtuse (one angle greater than 90 degrees).