Foundations of Geometry Vocabulary

lines that cross or meet and form angles

• parallel lines

• intersecting lines

• ray

A location in space that is represented by a dot and has no dimensions

• Point

• Line

• Plane

• Angle

Which one is a way to name this line?

• ̅A̅ ̅B̅

• ̅B̅ ̅A̅

• Line A

• Line l

What does this picture represent?

• Ray

• Line

• Segment

• Angle

What is another way to name ̅P̅ ̅Q̅?

• ̅Q̅ ̅P̅

• ↔PQ

• Line P

• Line Q

a 90 degree angle

• Acute Angle

• Vertex

• Right Angle

• Intersecting Line Segments

the intersection point of two sides of a plane figure

• Square

• Vertex

• Chord

• Right Angle

an angle less than 90 degrees but greater than 0 degrees

• Straight Angle

• Obtuse Angle

• Right Angle

• Acute Angle

an angle greater than 90 degrees but less than 180 degrees

• Right Angle

• Straight Angle

• Acute Angle

• Obtuse Angle

Angle EBD and Angle DBC are...

• Linear

• Supplementary

• Adjacent

• Congruent