Triangle Sum Theory

Front

What are the three types of triangles classified by their sides?

Back

Isosceles, Scalene, Equilateral

Front

What is the sum of the angles in 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 do you call angles that are less than 90 degrees?

Back

Acute angles

Front

What do you call angles that are greater than 90 degrees but less than 180 degrees?

Back

Obtuse angles

Front

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

Back

Isosceles triangle

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 each angle in an equilateral triangle?

Back

60 degrees

Front

If a triangle has angles measuring 50 degrees and 80 degrees, what is the measure of the third angle?

Back

50 degrees

Front

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

Back

Scalene triangle