Classifying Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Tags

CCSS.2.G.A.1

Front

What are the three types of triangles based on angles?

Back

Acute, Right, and Obtuse.

Tags

CCSS.4.G.A.2

Front

What is an acute triangle?

Back

A triangle where all angles are less than 90°.

Tags

CCSS.4.G.A.2

Front

What is a right triangle?

Back

A triangle that has one angle 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

How do you classify a triangle with angles measuring 30°, 60°, and 90°?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has angles of 45°, 45°, and 90°, what type is it?

Back

It is a right isosceles triangle.

Tags

CCSS.4.G.A.2

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Tags

CCSS.4.G.A.2

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Tags

CCSS.4.G.A.2

Front

How do you classify a triangle with angles measuring 100°, 40°, and 40°?

Back

It is an obtuse triangle.

Tags

CCSS.4.G.A.2