Classifying Triangles

What are the three things to look for when classifying triangles? Check all that apply.

• angle measures

• presence or absence of parallel or perpendicular lines

• total length of triangle

• side lengths

Tags

CCSS.4.G.A.2

A triangle is a....

• Quadrilateral

• Polygon

Tags

CCSS.2.G.A.1

How many sides, angles, and vertices does a triangle have?

• 2

• 3

• 4

• 5

Vertices are the ____________.

• Corners

• Sides

• Shapes

Tags

CCSS.6.G.A.4

What is the sum of the angles of a triangle?

• 200

• 160

• 100

• 180

Tags

CCSS.8.G.A.5

Check each box that is a type of angle.

• Obtuse

• Congruent

• Acute

• Right

• Polygon

Tags

CCSS.4.G.A.1

An acute angle is...

• less than 90 degrees

• 90 degrees

• more than 90 degrees

Tags

CCSS.4.G.A.1

An obtuse angle is...

• less than 90 degrees

• 90 degrees

• more than 90 degrees

Tags

CCSS.4.G.A.1

A right angle is...

• less than 90 degrees

• 90 degrees

• more than 90 degrees

Tags

CCSS.4.G.A.1

What triangle am I? I have 3 sides that are equal in length.

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2