Classifying Triangles and Triangle Sum Theorem FLASHCARD

Front

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

Back

Equilateral, Isosceles, Scalene.

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.

Front

What is a scalene triangle?

Back

A triangle with no sides of equal length.

Front

What is the Triangle Sum Theorem?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What are the angles in an equilateral triangle?

Back

All angles are 60 degrees.

Front

What is an equiangular triangle?

Back

A triangle where all three angles are equal.

Front

How many congruent sides does an isosceles triangle have?

Back

At least two congruent sides.

Front

What is the relationship between the angles in a scalene triangle?

Back

All angles are different.

Front

If one angle of a triangle measures 90 degrees, what type of triangle is it?

Back

It is a right triangle.