cross word puzzle

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Across
  1. 4. The surface covered in a plane is____,
  2. 5. 4 X side is the formula to find the perimeter of________,
  3. 6. Four sided closed figure is known as_____,
  4. 8. One of the angle in a right angle triangle is____,
  5. 9. Sum of length of all sides in a closed figure is known as____,
Down
  1. 1. When the sum of the measure of two angles is 180⁰ then the angles are called_______,
  2. 2. Three sided closed figure is known as_____,
  3. 3. Corresponding angles are always
  4. 7. length X breadth is the formula to find the area of ___,