Classify Triangles Practice

Classify the triangle by both sides and angles (choose two answers).

• Right triangle

• Acute triangle

• Obtuse triangle

• Isosceles triangle

• Scalene triangle

Classify this triangle by sides and angles (choose two answers).

• Acute triangle

• Obtuse triangle

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

Classify the triangle by sides and angles (choose two answers).

• Acute triangle

• Obtuse triangle

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

Classify the triangle by sides and angles (choose two answers).

• Right triangle

• Acute triangle

• Obtuse triangle

• Isosceles triangle

• Scalene triangle

Classify the triangle by sides and angles (choose two answers).

• Right triangle

• Acute triangle

• Obtuse triangle

• Equilateral triangle

• Isosceles triangle

Judy bought a new tent for camping. The sides measure 4 ft by 3 ft by 4 ft. All angles are less than 90 degrees. Classify the triangle by its sides and angles.

• Isosceles, obtuse

• Scalene, right

• Equilateral, acute

• Isosceles, acute

A triangle's sides measure 15 inches by 10 inches by 8 inches. It has one angle that measures 120 degrees. Classify the triangle by its sides and angles.

• Right, isosceles

• Equilateral, acute

• Obtuse, scalene

• Scalene, right

What type of angle is shown?

• acute
• obtuse
• right
• straight

What type of angle is this? 

• acute
• obtuse
• right
• big

An angle whose measure is exactly 90 degrees.

• acute
• vertical
• right
• straight