Geometry Proof Terms

If two angles form a linear pair

• they are both adjacent and supplementary

• they add to 180°

• they share a vertex

• they are on the same line

Two angles that add to 90^o are _________ angles.

• complementary angles

• right angles

• vertical angles

• supplementary angles

What do we call a collection of points that extends indefinitely in two directions? 

• a point

• a line

• a ray

• a plane

What do we call a specific location in space with no size or shape?

• point

• line

• ray

• plane

What type of angle is this? 

• obtuse

• acute

• right

• cute

Right, acute, or obtuse?

• Acute

• Right

• Obtuse

Which word describes line segment AD and line segment EH?

• parallel

• perpendicular

• skew

Which word describes line segment AB and line segment DH?

• parallel

• perpendicular

• skew

Which word describes line segment BC and line segment CG?

• parallel

• perpendicular

• skew

Which word describes line segment BF and line segment CG?

• parallel

• perpendicular

• skew