All About Triangles

Front

What are the three types of triangles based on side lengths?

Back

Equilateral, Isosceles, and Scalene.

Front

What are the three types of triangles based on angles?

Back

Acute, Right, and Obtuse.

Front

What is the Triangle Inequality Theorem?

Back

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Front

How do you identify the longest side of a triangle?

Back

The longest side is opposite the largest angle.

Front

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

Back

180 degrees.

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all angles measuring 60 degrees.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length and the angles opposite those sides are equal.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

What is a right triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.