Classifying triangles

Front

WHAT IS AN ACUTE TRIANGLE?

Back

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

Tags

CCSS.4.G.A.2

Front

WHAT IS AN OBTUSE TRIANGLE?

Back

A triangle that has one angle greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

WHAT IS A RIGHT TRIANGLE?

Back

A triangle that has one angle equal to 90 degrees.

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

WHAT IS AN EQUILATERAL TRIANGLE?

Back

A triangle with all three sides of equal length.

Tags

CCSS.4.G.A.2

Front

HOW TO IDENTIFY AN ACUTE TRIANGLE?

Back

Check if all angles are less than 90 degrees.

Tags

CCSS.4.G.A.2

Front

HOW TO IDENTIFY AN OBTUSE TRIANGLE?

Back

Check if one angle is greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

HOW TO IDENTIFY A RIGHT TRIANGLE?

Back

Check if one angle is exactly 90 degrees.

Tags

CCSS.2.G.A.1

Front

WHAT IS THE SUM OF ANGLES IN A TRIANGLE?

Back

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

Tags

CCSS.8.G.A.5