Classifying Triangles by Sides and Angles

What is the maximum degree measure for an acute angle?

• Less than 180 degrees

• Greater than 90 degrees

• Exactly 90 degrees

• Less than 90 degrees

What type of angle measures exactly 90 degrees?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

Which triangle has all angles less than 90 degrees?

• Right triangle

• Isosceles triangle

• Acute triangle

• Obtuse triangle

Which triangle has one angle greater than 90 degrees?

• Equilateral triangle

• Right triangle

• Acute triangle

• Obtuse triangle

A triangle with all sides of the same length is called?

• Isosceles triangle

• Equilateral triangle

• Acute triangle

• Scalene triangle

Which triangle has two sides of the same length?

• Scalene triangle

• Isosceles triangle

• Right triangle

• Equilateral triangle

Identify the triangle with no congruent sides.

• Isosceles triangle

• Equilateral triangle

• Scalene triangle

• Acute triangle

What type of triangle is formed by two congruent sides and all angles less than 90 degrees?

• Right isosceles triangle

• Scalene triangle

• Acute isosceles triangle

• Obtuse isosceles triangle

Which triangle is characterized by having exactly one right angle and no congruent sides?

• Acute scalene triangle

• Obtuse scalene triangle

• Right isosceles triangle

• Right scalene triangle

What should you do if you incorrectly classify a triangle?

• Review the material and correct the mistake

• Skip to the next question

• Guess again without reviewing

• Ignore the mistake