Geometry Vocabulary

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Across
  1. 4. Area of a _____= A=πr2
  2. 5. An angle that is more than 90 degrees but less than 180 degrees
  3. 9. Lines that never intersect
  4. 12. A side of a 3D figure
  5. 13. A pair of angles that share a side or ray
  6. 15. Length times Width
  7. 16. A triangle with no congruent sides
  8. 18. 2 angles that add up to 90 degrees
  9. 19. A angle that is exactly 90 degrees
Down
  1. 1. A closed plane figure formed by three or more line segments
  2. 2. Diameter times π
  3. 3. A triangle with no congruent sides
  4. 6. 2 angles that add up to 180 degrees
  5. 7. Two lines (or segments or rays) that intersect to form a right angle.
  6. 8. All the angles in a _____ add up to be 180 degrees
  7. 10. A triangle with 3 congruent sides
  8. 11. An angle that is less than 90 degrees
  9. 14. A chord that passes through the center of the circle
  10. 15. An angle that is more than 180 degrees but less than 360 degrees
  11. 17. A line segment joining the center to any point on the circle