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

Back

An acute angle.

Front

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

Back

An obtuse angle.

Front

If two angles in a triangle are 45 degrees and 75 degrees, what is the measure of the third angle?

Back

60 degrees.

Front

What is the formula to find the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the Pythagorean theorem?

Back

Front

What is the definition of a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths.

Front

What is the definition of an isosceles triangle?

Back

An isosceles triangle is a triangle with at least two sides of equal length.

Front

What is the definition of an equilateral triangle?

Back

An equilateral triangle is a triangle with all three sides of equal length.