Introduction to Geometry

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Across
  1. 5. an angle that is more than 90° and less than 180°
  2. 9. a shape that has 8 sides
  3. 10. a shape that has 4 sides
  4. 13. angle more than 180°
  5. 14. the length of the line through the center that touches two point son the circumference of the circle
  6. 15. a four-sided shape where opposite sides are parallel and equal
Down
  1. 1. an angle between 0° and 90°
  2. 2. a three-sided shape that has three equal sides and three equal angles
  3. 3. two lines that intersect at 90°
  4. 4. a three-sided shape that has two equal sides and two equal angles
  5. 6. a four-sided shape that has only one pair of parallel sides
  6. 7. length of the line from the centre to the circumference of a circle
  7. 8. a four-sided shape that has four equal sides and four equal angles
  8. 11. a shape that has five sides
  9. 12. two lines that will never intersect