Unit 1 Vocabulary

Learn Undefined vs Defined Geometric Terms! Master point, line, plane, segment & ray.

Undefined vs. Defined Sort the words into Undefined Terms or Defined Terms. Click on the words in the word bank in order to sort. Undefined Terms Line Plane Collinear Points Coplanar Points Defined Terms Segment Ray Opposite Rays Intersection Fill in the blank. Undefined Terms are words that do not have formal definitions but there is an agreement about what they mean.A Point has no size, only location.A Line is a straight, continuous arrangement of infinitely many points, and extends forever in BOTH directions.A Plane has length and width, but no thickness, and extends infinitely along its length and width.Collinear Points are on the same line.Coplanar Points are on the same plane.Defined Terms can be described using known terms like point or line.A Line Segment is a part of a line that is bounded by two distinct end points.A Ray is a line which starts at one point and goes the other direction infinitely.An Intersection is where two or more geometric figures have one or more points in common.