Triangle Angles Quiz

What type of triangle has all three angles less than 90 degrees?

• Right triangle

• Obtuse triangle

• Acute triangle

• Equilateral triangle

If one angle in a triangle is 90 degrees and the second angle is 45 degrees, what is the measure of the third angle?

• 45 degrees

• 55 degrees

• 35 degrees

• 90 degrees

If two angles are supplementary and one angle measures 110 degrees, what is the measure of the other angle?

• 70 degrees

• 110 degrees

• 90 degrees

• 80 degrees

What type of triangle has one angle that measures more than 90 degrees?

• Acute triangle

• Right triangle

• Obtuse triangle

• Isosceles triangle

What type of triangle has three equal sides?

• Scalene triangle

• Isosceles triangle

• Equilateral triangle

• Right triangle

If the sum of two angles is 90 degrees, these angles are called:

• Obtuse

• Supplementary

• Complementary

• None of the above

Which of the following is not a characteristic of a scalene triangle?

• No equal sides

• No equal angles

• At least two equal sides

• All angles are different

What type of triangle has two equal sides and two equal angles?

• Scalene triangle

• Isosceles triangle

• Equilateral triangle

• Right triangle

Which statement is true about the angles in a triangle?

• They always sum up to 180 degrees.

• They always sum up to 90 degrees.

• They can sum up to any value.

• They always sum up to 360 degrees.

If an angle measures 100 degrees, what is the measure of its supplementary angle?

• 80 degrees

• 100 degrees

• 180 degrees

• 90 degrees