crossword

1234567
Across
  1. 2. Polygon in which all angles are equal in measure and all sides have the same length
  2. 4. Straight line that connects two points on the circumference of a circle
  3. 6. Branch of Mathematics that studies relationships involving lengths and angles of triangles
  4. 7. Having exactly the same size and shape
Down
  1. 1. half of a sphere
  2. 3. Instrument used to measure or draw angles
  3. 4. number of elements in a set
  4. 5. Ten raised to the power of a hundred