Angles in Triangles

Front

What is the sum of the angles in a triangle?

Back

180 Degrees

Front

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

Back

Right Triangle

Front

What do you call an angle that is less than 90 degrees?

Back

Acute Angle

Front

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

Back

Obtuse Angle

Front

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

Back

60 Degrees

Front

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

Back

70 Degrees

Front

What is the relationship between the angles in a triangle and the exterior angle?

Back

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

Front

In a triangle, if one angle measures 30 degrees, what is the measure of the other two angles if it is an isosceles triangle?

Back

30 degrees and 30 degrees.

Front

What is the term for a triangle with all sides of different lengths?

Back

Scalene Triangle

Front

If a triangle has angles measuring 45 degrees and 45 degrees, what is the measure of the third angle?

Back

90 Degrees