Classifying Triangles Quiz

What is a right angle?

• An angle that is 180 degrees

• An angle exactly 90 degrees

• An angle less than 90 degrees

• An angle more than 90 degrees

What is a key feature of a right triangle?

• It has two right angles

• It has all angles more than 90 degrees

• It has one angle exactly 90 degrees

• It has all angles less than 90 degrees

Which of the following describes an acute angle?

• An angle that is 180 degrees

• An angle that is exactly 90 degrees

• An angle that is more than 90 degrees

• An angle that is less than 90 degrees

What is true about all angles in an acute triangle?

• One angle is exactly 90 degrees

• All angles are more than 90 degrees

• All angles are less than 90 degrees

• All angles are exactly 90 degrees

What is an obtuse angle?

• An angle less than 90 degrees

• An angle that is 180 degrees

• An angle exactly 90 degrees

• An angle more than 90 degrees

What characterizes an obtuse triangle?

• It has all angles less than 90 degrees

• It has one angle exactly 90 degrees

• It has one angle more than 90 degrees

• It has two obtuse angles

Which triangle has one angle that is exactly 90 degrees?

• Equilateral triangle

• Acute triangle

• Obtuse triangle

• Right triangle

Which triangle has all angles less than 90 degrees?

• Scalene triangle

• Acute triangle

• Obtuse triangle

• Right triangle

Which triangle has one angle greater than 90 degrees?

• Right triangle

• Isosceles triangle

• Acute triangle

• Obtuse triangle

What is the common feature of all triangles discussed?

• They all have one obtuse angle

• They all have equal sides

• They all have angles that sum up to 180 degrees

• They all have one right angle