TRIANGLES BY SIDES

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all three 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 defines an acute triangle?

Back

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

Front

What defines an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What defines a right triangle?

Back

A triangle that has one angle exactly equal to 90 degrees.

Front

How do you classify a triangle with sides measuring 6 inches, 6 inches, and 4 inches?

Back

Isosceles triangle.

Front

True or False: Acute triangles have two acute angles and one right angle.

Back

FALSE.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

If a triangle has one angle that measures 100 degrees, what type of triangle is it?

Back

Obtuse triangle.