Classifying Triangles and Triangle Sum Theorem FLASHCARD

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

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

Back

The three types of triangles based on side lengths are equilateral, isosceles, and scalene.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal, each measuring 60 degrees.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths and all three angles are different.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are equal.

Front

What is an equiangular triangle?

Back

An equiangular triangle is a triangle in which all three angles are equal, and therefore it is also equilateral.

Front

How can you determine if a triangle is scalene?

Back

A triangle is scalene if none of its sides are congruent, meaning all sides have different lengths.

Front

What is the relationship between the angles in an equiangular triangle?

Back

In an equiangular triangle, all angles are equal, and each angle measures 60 degrees.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the definition of congruent sides?

Back

Congruent sides are sides that have the same length.