Classifying Triangles Review

• acute

• obtuse

• right

Classify the triangle by angles and sides.

• Equiangular Scalene
• Acute Scalene
• Acute Equilateral
• None of the above

A triangle has side lengths of 15 centimeters, 11 centimeters, and 9 centimeters. What kind of triangle is it?

• equilateral

• isosceles

• scalene

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What is the name of this kind of triangle?

• Right
• Scalene
• Isosceles
• Equilateral

A triangle has angle measurements of 74°, 90°, and 16°. What kind of triangle is it?

• acute triangle
• right triangle
• obtuse triangle
• none of the above

Classify the triangle by angles and sides.

• Equiangular Equilateral
• Right Isosceles
• Right Scalene
• Acute Isosceles

A triangle has side lengths of 19 centimetres, 19 centimetres, and 20 centimetres. Is this triangle equilateral?

• equilateral triangle
• isosceles triangle  
• scalene triangle
• none of the above

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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

A triangle has angle measurements of 54°, 52°, and 74°. What kind of triangle is it?

• acute triangle
• right triangle
• obtuse triangle
• none of the above