Fourth Grade Math Vocabulary Part 1

1. Half of the diameter is?

A) the circumference
B) a concentric circle
C) a regular polygon
D) the radius

2. An octagon is an example of a?

A) convex segment
B) concave compass
C) concentric circle
D) polygon

3. A ray is?

A) a line having one endpoint.
B) a tool for drawing circles.
C) a line having a beginning and end.
D) the point at which two lines meet.

4. Polygons having all angles pointed outward would be considered?

A) radial
B) concave
C) convex
D) circumferential

5. Two rays meet together. They form a?

A) vertex
B) regular polygon
C) diameter
D) compass

6. The equator gives us an example of a/an?

A) radius
B) line segment
C) circumference
D) endpoint

7. If you wanted to draw a circle, you would use which tool?

A) a compass
B) a circumference
C) a radial iron
D) a polygon

8. What is Mr. Littlefield's favorite drink?

A) Chocolate Milk
B) Coke
C) Mt. Dew
D) Kool-Aid

9. What are you if you have two endpoints?

A) concave
B) a ray
C) a vertex
D) a line segment

10. If circles share the same center, they are considered?

A) concentric circles
B) radial
C) circumferential
D) regular polygons

11. Define concave

A) a polygon whose sides and angles are equal in measure
B) a line segment from the center of the circle to any point on its circumference
C) polygons having two or more angles pushed inward
D) polygons having all angles pointed outward

12. This is a line segment that passes through the center of a circle with endpoints on its circumference.

A) circumference
B) vertices
C) radius
D) diameter

13. All of my sides and angles are equal in measure. I am a?

A) falsified polygon
B) concentric circle
C) regular polygon
D) line segment

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