Triangle Classification

Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

Which would be the best classification for the triangle shown?

• acute isosceles

• equiangular scalene

• equiangular isosceles

• equiangular equilateral

Which would be the best classification for the triangle shown?

• right isosceles

• obtuse scalene

• obtuse isosceles

• right scalene

How many acute angles must an acute triangle have?

• 2

• 1

• 4

• 3

Which words best describe this triangle?

• Right

• Acute

• Obtuse

• Isosceles

• Scalene

What type of triangle is this? 

• Scalene

• Right

• Obtuse

• Isosceles

Identify all the correct terms to describe the triangle shown.

• Obtuse

• Equilateral

• Isosceles

• Right

• Acute

Why is the triangle classified as isosceles?

• All angles are acute

• At least two sides are congruent

• At least one angle is acute

• All angles are congruent

Leah drew a triangle on a piece of paper. She made one side 5 inches long, another side 4 inches long, and the final side 3 inches long. What kind of triangle did she create?

• Equilateral

• Scalene

• Straight

• Isosceles

Lydia drew the Venn diagram behind...
Use the Venn diagram to answer the question that follows

• All isosceles triangles are equilateral.

• All equilateral triangles are isosceles.

• All equilateral triangles are scalene.

• All scalene triangles are isosceles.