Basic Geometry

What does the image show?

• a line

• a line segment

• a ray

• a point

What is a line segment?

• A set of points that goes on forever in both directions

• A curved line that goes on in one direction forever

• A part of a line between two endpoints

Angle that measures 90 degrees

• acute

• straight

• right

• obtuse

What is an angle?

• A straight set of two points that go on forever on each side

• A part of a line with end points on both sides

• Two rays with the same end point, forming a vertex

A straight angle is....

• 90⁰

• 60⁰

• 30⁰

• 180⁰

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

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

• ray

• line

• line segment

• point

This shape is called a ...

• quadrilateral

• triangle

• trapezoid

• parallelogram

This is an example of an ..

• pentagon

• quadrilateral

• triangle

• octagon