Classifying Triangles

Front

What is a triangle?

Back

A polygon with three edges and three vertices.

Tags

CCSS.2.G.A.1

Front

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

Back

Equilateral, Isosceles, Scalene.

Tags

CCSS.4.G.A.2

Front

What is an Equilateral triangle?

Back

A triangle with all three sides of equal length and all three angles equal to 60°.

Tags

CCSS.4.G.A.2

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.

Tags

CCSS.4.G.A.2

Front

What is a Scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Tags

CCSS.4.G.A.2

Front

What are the three main types of triangles based on angles?

Back

Acute, Right, Obtuse.

Tags

CCSS.4.G.A.2

Front

What is an Acute triangle?

Back

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

Tags

CCSS.4.G.A.2

Front

What is a Right triangle?

Back

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

Tags

CCSS.4.G.A.2

Front

What is an Obtuse triangle?

Back

A triangle that has one angle greater than 90°.

Tags

CCSS.4.G.A.2

Front

What is a Right Isosceles triangle?

Back

A triangle that has one right angle and two sides of equal length.

Tags

CCSS.4.G.A.2