1. Term
Definition
How to Name…
Picture

2. The Big 3 of Geometry
Point
Line
Plane

3. Point Definition: Location only; it has no size.
How to Name: One capital letter.
Example: P
Picture:

4. Line
Definition: Straight continuous arrangement of infinitely many points.
How to Name: Two capital letters with a line with 2 arrows above it.
Example: 𝐶𝐷
Picture:

5. Plane
Definition: Flat surface that extends infinitely along its length and width.
How to Name: One capital script (cursive) letter.
Example: M
Picture:

6. Collinear
Definition: On the same line
Picture:

7. Coplanar
Definition: On the same plane
Picture:

8. Ray
Definition: A point on a line, and all the points that lie on one side of this point.
How to Name: Two capital letters and a line with one arrow above. The endpoint must be the first letter.
Example: 𝐹𝑅
Picture:

9. Line Segment Definition: Part of line. Does not extend indefinitely.
How to Name: Two capital letters and a line on top.
Example: 𝐴𝐵
Picture:

10. Midpoint
Definition: Point on a line segment that is the same distance from both end points.
How to Name: One capital letter
Example: C
Picture:

11. Congruent
Definition: Equal. The same length. The same size. The same measure.
Picture: Drawn with “hash” marks.

12. Bisects Definition- Divides into two equal, congruent parts. Picture:
Line: divides into two congruent segments
Angle: divides into two congruent angles
Picture:

13. How would you properly name these figures
How would you properly name these figures? Can you name them in more than one way?