Basic Geometry Vocab

What does the image show? 
(The whole thing, not just the points)

• a ray

• a line

• a line segment

• a point

Which angle is greater than 90 but less than 180 degrees?

• acute

• right

• obtuse

• straight line

I am sometimes known as an angle or a corner. I am where lines meet at a point. 

• corner

• vertex or vertices

• point

This shape is called a ...

• quadrilateral

• triangle

• trapezoid

• parallelogram

This is an example of an ..

• pentagon

• quadrilateral

• triangle

• octagon

This is an example of...

• Intersecting lines

• parallel lines

• perpendicular lines

Parallel lines never

A pentagon has ______ sides

• 3

• 4

• 5

• 6

A polygon... (check all that apply)

• is made of straight lines

• is made of curved lines

• is closed shape (no openings)

• is an open shape

Perpendicular lines make right angles when they meet

• True

• False