Triangles

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

Classify a triangle with one angle measuring 90 degrees.

Back

Right triangle.

Front

Classify a triangle with all sides of different lengths.

Back

Scalene triangle.

Front

Classify a triangle with all angles less than 90 degrees.

Back

Acute triangle.

Front

Classify a triangle with one angle greater than 90 degrees.

Back

Obtuse triangle.

Front

What is the definition of an equilateral triangle?

Back

A triangle with all three sides of equal length.

Front

What is the definition of an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

Do the side lengths 3, 5, and 10 form a triangle?

Back

No.

Front

What is the formula to find the measure of an unknown angle in a triangle?

Back

180 degrees - (sum of the other two angles).

Front

What is a right triangle?

Back

A triangle that has one angle measuring 90 degrees.