B. Geometry Symbols – “Shape Shifters”

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Across
  1. 5. (≅) – Same size.
  2. 7. (⊥) – Forms 90 degrees.
  3. 10. (π) – Circle ratio.
  4. 12. (○) – Round shape.
  5. 13. (d) – Across the circle.
  6. 14. (△) – Three-sided shape.
  7. 15. (∅) – No elements.
Down
  1. 1. (□) – Four equal sides.
  2. 2. (∡) – Labeled angle.
  3. 3. (∠) – Corner measure.
  4. 4. (r) – Half of the diameter.
  5. 6. (⊙) – Middle point.
  6. 8. (∥) – Never intersect.
  7. 9. (↔) – Connects two points.
  8. 11. (∼) – Same shape.