Classifying Triangles

Triangles can be classified by what two things?

• Side length

• Number of Vertices

• Angles

• Congruent Sides

Tags

CCSS.7.G.A.2

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

Tags

CCSS.7.G.B.5

Look at the sides of this triangle. What type of triangle is this?

• scalene

• isosceles

• equilateral

Tags

CCSS.7.G.A.2

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.7.G.A.2

Classify the triangle by angles and sides.

• Obtuse Scalene
• Obtuse Isosceles
• Right Scalene
• Acute Isosceles

Tags

CCSS.7.G.A.2

Which type of triangle is pictured?

• A

• B

• C

• D

Tags

CCSS.7.G.A.2

What is an example of a pair of complementary angles?

• 13° and 45°
• 10° and 170°
• 81° and 9°
• 90° and 3°

Tags

CCSS.7.G.B.5

Which type of triangle is pictured?

• A

• B

• C

• D

Tags

CCSS.7.G.A.2

CCSS.7.G.B.5

In a ____________ triangle one angle is exactly 90 degrees.

• acute

• right

• obtuse

• 360 degrees

Tags

CCSS.7.G.A.2

An ____________ triangle has three equal sides.

• isosceles

• equilateral

• scalene

Tags

CCSS.7.G.A.2