Geometry Challenge!

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Across
  1. 3. Lines that intersect at a right angle
  2. 4. Lines in a two-dimensional space that do not meet
  3. 6. A triangle that has at least two congruent sides
  4. 10. Type of a triangle where all sides are congruent
  5. 12. A two-dimensional shape in which all points on the curved line are equidistant from a center point
  6. 15. Two angles that have a sum of 90 degrees
  7. 16. A figure formed by two rays that share an endpoint
  8. 17. A pair of non-adjacent angles formed by intersection of two lines. They are always congruent.
Down
  1. 1. A segment, line, or a ray that divides something into two congruent parts
  2. 2. Two angles that have a sum of 180 degrees
  3. 5. Also known as a corner of a figure
  4. 7. A triangle in which all sides are of different lengths
  5. 8. Angles or sides that are in the same location of two different figures
  6. 9. Figures that have the same shape, but not necessarily the same size
  7. 11. A point in the middle of a line segment
  8. 13. Figures that are identical in size and shape
  9. 14. A closed figure with three sides