Shapes and Angles

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Across
  1. 3. HOW MANY ACUTE ANGLES DOES THE SHAPE HAVE
  2. 5. TOTAL INTERNAL ANGLES OF THE SHAPE
  3. 8. THE ANGLES HAS 12 OF THESE ANGLES
  4. 10. A TRIANGLE WITH THREE SIDES OF EQUAL LENGTH
  5. 12. A TRIANGLE WITH THREE DIFFERENT LENGTH SIDES THAT DOES NOT HAVE A RIGHT ANGLE
Down
  1. 1. A THREE SIDED 2D SHAPE
  2. 2. AN ANGLE >90 DEGREES
  3. 4. A TRIANGLE WITH TWO SIDES OF EQUAL LENGTH
  4. 6. A 2D SHAPE WITH EIGHT CORNERS
  5. 7. HOW MANY SIDES HAS A PENTAGON
  6. 9. HOW MANY RIGHT-ANGLES DOES THE SHAPE HAVE
  7. 11. AN ANGLE OF 90 DEGREES