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.

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

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

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

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):

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):

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

Lesson 1: Geometry Vocabulary Ray, AB:

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

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:

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

Lesson 1: Geometry Vocabulary Congruent, ≅:

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

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

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