LESSON: Introduction to Geometry

Objectives/Vocab

Objectives

  • Identify points, rays, lines and segments using words and symbols.
  • Identify intersecting and parallel lines.
  • Identify angles by vertex and ray.
  • Draw angles using a protractor.

Vocabulary

Point
a location in space that does not have size or shape.
Ray
a line that has one endpoint and continues indefinitely in one direction.
Line
a set of connected points without endpoints.
Line Segment
a set of connected points with two endpoints.
Point of Intersection
the point where two intersecting lines meet.
Intersecting Lines
lines that cross or meet at some point
Parallel Lines
Lines that do not cross or meet EVER and are equidistant apart.
Angle
a geometric figure formed by two rays that connect at a single point or vertex.
Vertex
The points on an angle
Protractor
a tool used to measure an angle in terms of degrees.