2.1 Classifying Triangles

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

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

Define 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 to 60 degrees.

Front

Define 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

Define 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 a Right triangle?

Back

A Right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is an Obtuse triangle?

Back

An Obtuse triangle is a triangle that has one angle measuring more than 90 degrees.

Front

What is a Right Isosceles triangle?

Back

A Right Isosceles triangle is a triangle that has a right angle and two sides of equal length.

Front

What is an Obtuse Isosceles triangle?

Back

An Obtuse Isosceles triangle is a triangle that has an obtuse angle and two sides of equal length.