Classifying Triangles

An acute triangle has __________ angles that each measure less than 90°.

• one

• two

• three

• four

An isosceles triangle has _________ equal sides.

• one

• two

• three

• four

An ____________ triangle has three equal sides.

• isosceles

• equilateral

• scalene

An obtuse triangle has one angle that measures _____________ 90°.

• less than

• exactly

• more than

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What is the name of this kind of triangle?

• Right
• Isosceles
• Scalene
• Equilateral

In a triangle, how many total degrees are there?

• 100%
• 180 degrees
• it varies
• 360 degrees

Identify the triangle by its sides and angles

• Equilateral

• Obtuse Equilateral

• Acute Equilateral

• Acute Isosceles

What types of triangles describe the kind of SIDES a triangle has? Pick all 3 that apply.

• Right

• Equilateral

• Isosceles

• Obtuse

• Scalene

What types of triangles describe the kind of ANGLES a triangle has? Pick all 3 that apply.

• Right

• Equilateral

• Acute

• Obtuse

• Scalene

Identify the triangle by its sides and angles

• Right Isosceles

• Right Scalene

• Right Equilateral