Obtuse, Right, and Acute Triangles

Use the angles to classify the triangles

Tags

CCSS.4.G.A.2

Use the angles to classify the triangles

Tags

CCSS.4.G.A.2

Use the angles to classify the triangles

all angles less than 90° - acute triangle

1 angle is equal to 90° - right triangle

1 angle is greater than 90° - obtuse triangle

Tags

CCSS.4.G.A.2

Find the measure of the missing angle in the triangle.

Tags

CCSS.8.G.A.5

Find b.

Tags

CCSS.8.G.A.5

Find the measure of the missing angle in the triangle.

Tags

CCSS.8.G.A.5

Find the measure of the missing angle in the triangle.

Tags

CCSS.7.G.B.5

Find the measure of the missing angle in the triangle.

Tags

CCSS.8.G.A.5

This is a right triangle because —

• it is facing the right way

• it has 3 acute angles

• it has one 90 degree angle

• it does not have one obtuse angle

Tags

CCSS.4.G.A.2

Which words best describe this triangle?

• Right

• Acute

• Obtuse

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2