Geometry Grade 9 Quiz

What is the sum of angles on a straight line?

• 180 degrees

• 90 degrees

• 360 degrees

• 270 degrees

If a line is not explicitly stated as straight, what should you do?

• Ignore it

• Check the context

• Assume it is not straight

• Assume it is straight

If two angles are vertically opposite, what can be said about their measures?

• They are supplementary

• They are complementary

• They are equal

• They are different

What is the measure of an angle formed by two perpendicular lines?

• 270 degrees

• 90 degrees

• 180 degrees

• 45 degrees

In a triangle, what is the sum of the interior angles?

• 90 degrees

• 180 degrees

• 360 degrees

• 270 degrees

What is the exterior angle of a triangle equal to?

• The sum of the opposite interior angles

• The sum of the base angles

• The sum of all interior angles

• The sum of the adjacent interior angles

What is the relationship between alternate angles when two lines are parallel?

• They are equal

• They are supplementary

• They are different

• They are complementary

How do co-interior angles relate when two lines are parallel?

• They are equal

• They add up to 180 degrees

• They add up to 90 degrees

• They are complementary

When solving for X in terms of angles, what is a common first step?

• Divide angles

• Multiply angles

• Subtract known angles from 180

• Add all angles

What is the sum of angles in a quadrilateral?

• 90 degrees

• 270 degrees

• 360 degrees

• 180 degrees