1. Geometry Notes: Vocabulary
Date:
Geometry Notes: Vocabulary
Lesson Objective: Learn geometry vocabulary.
You will need: a pencil, smartphone
This is Jeopardy!!!: This is the main difference between a line and a line segment.

2. Lesson 1: Geometry Vocabulary
Plane: a flat surface or 2-dimensional (2-D) object, stretching to infinity in all directions
Line, AB: a straight path that extends without end in opposite directions
Line segment, AB: a part of a line between two points
Bisect: to divide into two congruent parts

3. Lesson 1: Geometry Vocabulary
Parallel lines, | |: lines that have the same slope and therefore do not intersect
Perpendicular, | : lines that intersect at 90° angles
Coplanar (add this to the bottom of p. 1): lies on the same plane
Collinear (add this at the top of page 2): points on the same line

4. Lesson 1: Geometry Vocabulary
Intersect (add this to the bottom of p. 2):

5. Lesson 1: Geometry Vocabulary
Intersect (add this to the bottom of p. 2): to cut across or overlap
Skew (add this to the top of p. 3):

6. Lesson 1: Geometry Vocabulary
Intersect (add this to the bottom of p. 2): to cut across or overlap
Skew (add this to the top of p. 3): lines that never cross and are not parallel
Arc, AB (add this to the bottom of p. 3):

7. Lesson 1: Geometry Vocabulary
Intersect (add this to the bottom of p. 2): to cut across or overlap
Skew (add this to the top of p. 3): lines that never cross and are not parallel
Arc, AB (add this to the bottom of p. 3): a part of a circle that is defined by two endpoints

8. Lesson 1: Geometry Vocabulary
Ray, AB:

9. Lesson 1: Geometry Vocabulary
Ray, AB: a part of a line that starts at an endpoint and extends forever in one direction
Angle, / :

10. Lesson 1: Geometry Vocabulary
Ray, AB: a part of a line that starts at an endpoint and extends forever in one direction
Angle, / : a figure formed by two rays with a common endpoint
Vertex:

11. Lesson 1: Geometry Vocabulary
Ray, AB: a part of a line that starts at an endpoint and extends forever in one direction
Angle, / : a figure formed by two rays with a common endpoint
Vertex: the point at which the endpoints of two rays intersect to form an angle

12. Lesson 1: Geometry Vocabulary
Congruent, ≅:

13. Lesson 1: Geometry Vocabulary
Congruent, ≅: having the same measure or size
Polygon:

14. Lesson 1: Geometry Vocabulary
Congruent, ≅: having the same measure or size
Polygon: a closed plane figure having three or more sides
Regular Polygon:

15. Lesson 1: Geometry Vocabulary
Congruent, ≅: having the same measure or size
Polygon: a closed plane figure having three or more sides
Regular Polygon: a polygon with congruent sides and angles