Geometry Vocabulary

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Across
  1. 2. points that lie on the same plane.
  2. 3. two angles whose sum is 90 degrees.
  3. 6. is the part of a line that contains an endpoint and all points extending in the other direction.
  4. 7. two angles whose sum is 180 degrees.
  5. 8. has no size; length, width, or height. It is represented by a dot and named by a capital letter.
  6. 9. set of points which has infinite length but no width or height. A line is named by a lower case letter or by any two points on the line.
Down
  1. 1. lines two lines are parallel if they are coplanar and do not intersect.
  2. 2. points that lie on the same line.
  3. 4. part of a line that consists of two points called endpoints and all points between them.
  4. 5. two lines that intersect to form right angles.
  5. 8. set of points that has infinite length and width but no height. We name a plane with a capital letter.