Triangle Classification

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°
• 90°
• 180°
• 360°

Tags

CCSS.8.G.A.5

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

• scalene
• acute
• equilateral
• isosceles

Tags

CCSS.4.G.A.2

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle
• Right Isosceles Triangle
• Obtuse Scalene Triangle
• Obtuse Equilateral Triangle

Tags

CCSS.4.G.A.2

Find the measure of the missing angle.

• 47
• 57
• 53
• 133

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 140°
• 21°
• 105°
• 25°

Tags

CCSS.8.G.A.5

You can classify triangles by their ___________ and by their ____________. (Select the two that apply)

• sides

• shape

• color

• angles

Tags

CCSS.4.G.A.2

Which would be the best classification for the triangle shown?

• acute isosceles
• obtuse scalene
• obtuse isosceles
• acute scalene

Tags

CCSS.4.G.A.2

Which would be the best classification for the triangle shown?

• right isosceles
• obtuse scalene
• obtuse isosceles
• right scalene

Tags

CCSS.4.G.A.2

What is an isosceles triangle?

• a triangle with 2 congruent sides.
• Adds up to 180
• a triangle with 3 congruent sides
• a triangle with all angles less than 90⁰

Tags

CCSS.4.G.A.2

Can a triangle can have 2 right angles in it?

• Yes
• No
• Sometimes
• It can have a maximum of 3 right angles.

Tags

CCSS.8.G.A.5