Foundations of Geometry Vocabulary

Name the image

• Line

• Ray

• Line segment

• Angle

A line is named by...

• Any 2 points on the line, or a lowercase script letter.

• Any 3 points on the line.

• Any 1 point on the line.

• Any 3 points on the line, or a uppercase script letter.

A plane is named by...

• Any 1 point on the plane.

• Any 3 collinear points on the plane or a lowercase script letter.

• Any 3 non-collinear points on the plane or an uppercase script letter.

• All points on the plane that aren't part of a line.

Two distinct non-parallel lines intersect at a ....

• angle

• point

• line

• intersection

Divides an angle into two equal measure angles

• midpoint

• perpendicular bisector

• ray

• angle bisector

What do you call two angles whose sum is 180 degrees? 

• Vertical Angles

• Supplementary Angles

• Complementary Angles

• Adjacent Angles

What do you call two angles whose sum is 90 degrees? 

• Straight Angles

• Vertical Angles

• Complementary Angles

• Adjacent Angles

This is what kind of angle?

• acute

• obtuse

• right

• straight

What is a straight angle?

• An angle that measures more than 90 degrees.

• An angle that measures less than 90 degrees.

• An angle that measures exactly 90 degrees.

• An angle that measures exactly 180 degrees. 

a polygon with 4 sides and 4 angles

• hexagon

• line segment

• quadrilateral