Maths crossword

12345
Across
  1. 3. part of a whole
  2. 5. a rectangle has two small _ _ _ _ _ and two big _ _ _ _ _
Down
  1. 1. the lenght multiplyed by the width
  2. 2. how many sides does a decagon have how many years in a decade how many faces does a dodecohedron
  3. 4. circles, squares and triangles these are all