What is the sum of angles in any triangle?

A triangle with all sides equal is called a(n):

A triangle with two equal sides is called a(n):

A triangle with all sides of different lengths is called a(n):

Which triangle has one angle of 90 degrees?

In a right-angled triangle, the longest side is called the:

The line segment from a vertex to the midpoint of the opposite side is called a:

What is the name of a triangle with all angles less than 90 degrees?

What is the name of a triangle with one angle greater than 90 degrees?

If two angles of a triangle are 60° and 80°, what is the measure of the third angle?