Classifying Triangles

Acute angles are:

• less than 90 degrees

• greater than 90 degrees

• exactly 90 degrees

Tags

CCSS.4.G.A.1

Right angles are:

• less than 90 degrees

• greater than 90 degrees 

• exactly 90 degrees

Tags

CCSS.4.G.A.1

Obtuse angles are:

• less than 90 degrees

• greater than 90 degrees

• exactly 90 degrees

Tags

CCSS.4.G.A.1

Choose all that apply.

• All triangles have at least 2 acute angles.

• An acute triangle has 3 acute angles.

• A right triangle has 1 right angle and 2  acute angles.

• An obtuse triangle has 1 obtuse angle and 2 acute angles.

Tags

CCSS.4.G.A.2

An equilateral triangle has...

• no sides of equal length

• only two sides of equal length

• all three sides of equal length

Tags

CCSS.4.G.A.2

An isosceles triangle has...

• no sides of equal length

• only two sides of equal length

• all three sides of equal length

Tags

CCSS.4.G.A.2

A scalene triangle has...

• no sides of equal length

• only two sides of equal length

• all three sides of equal length

Tags

CCSS.4.G.A.2