Identifying Triangles

Front

What is an Isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is a Scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is an Equilateral triangle?

Back

A triangle with all three sides of equal length.

Front

What is an Acute triangle?

Back

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

Front

What is a Right triangle?

Back

A triangle that has one angle equal to 90°.

Front

What is an Obtuse triangle?

Back

A triangle that has one angle greater than 90°.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.

Front

What is the sum of the angles in any triangle?

Back

180°.

Front

If a triangle has angles of 30° and 60°, what is the third angle?

Back

90°.

Front

What type of triangle has angles of 45°, 45°, and 90°?

Back

Right Isosceles triangle.