The Language of Geometry

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Across
  1. 2. A _____ can be named by 3 points that lie on the _____.
  2. 5. In Geometry, a _______ is often used to draw straight lines.
  3. 6. A "half-line" which is named by using an endpoint and another point.
  4. 9. A combination of two rays (half-lines) with a common endpoint.
  5. 10. The middle point of a line segment.
  6. 14. The meeting of two lines that form an angle.
  7. 15. An angle that equals 90° & can be often found at the intersection of two perpendicular lines.
  8. 16. When two or more lines meet or cross each other in a plane, they are often called ________ _____.
Down
  1. 1. Coplanar lines which intersect at a right angle.
  2. 2. Coplanar lines that do not intersect
  3. 3. l || m
  4. 4. A tool used to measure angles in Geometry.
  5. 7. ​​Is exactly half of a revolution & is also known as "flat angle".
  6. 8. Has no thickness & goes on forever.
  7. 11. A measurement of a plane angle in which one full rotation is 360 degrees.
  8. 12. Often represented as dots & has no actual size.
  9. 13. A portion of a line from one point to another which can be named by using endpoints.