Missing Triangle Measures

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

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

Back

It is a right triangle.

Front

What do you call a triangle with all sides of different lengths?

Back

It is called a scalene triangle.

Front

What do you call a triangle with at least two equal sides?

Back

It is called an isosceles triangle.

Front

What is the value of the missing angle if two angles in a triangle are 50 degrees and 60 degrees?

Back

The missing angle is 70 degrees (180 - 50 - 60 = 70).

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 an acute triangle?

Back

An acute triangle is a triangle where all angles are less than 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

Front

If one angle in a triangle is 30 degrees and another is 60 degrees, what is the third angle?

Back

The third angle is 90 degrees (180 - 30 - 60 = 90).

Front

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

Back

In a right triangle, one angle is 90 degrees, and the sum of the other two angles is 90 degrees.