Geometry Vocabulary

A straight path that goes in 2 directions without ending

• line segment

• ray

• line

• parallel lines

A line that has one endpoint and goes on forever in only one direction.

• line segment

• intersecting lines

• line

• ray

has two end points

• line segment

• line

• ray

• angle

2 lines that are the same distance apart and never meet

• intersecting lines

• parallel lines

• angle lines

• perpendicular lines

2 lines that meet or cross each other

• parallel lines

• intersecting lines

• angle lines

• perpendicular lines

2 lines that meet or cross each other to form square corners

• parallel lines

• intersecting lines

• angle lines

• perpendicular lines

Which one can be an acute angle?

• 35 degrees

• 92 degrees

• 127 degrees

• 180 degrees

Which one can be a right angle?

• 35 degrees

• 90 degrees

• 127 degrees

• 180 degrees

Which one can be an obtuse angle

• 35 degrees

• 89 degrees

• 90 degrees

• 127 degrees

A closed, 2 dimensional figure with straight sides

• square

• polygon

• quadrilateral

• parallelogram