Maths!

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Across
  1. 1. What we call two angles that together equal 90 degrees.
  2. 2. A term used to describe a shape whose sides are all of equal length
  3. 4. A procedure or set of steps used to solve a mathematical computation.
  4. 5. A polynomial equation with two terms usually joined by a plus or minus sign.
Down
  1. 1. A letter or number representing a numerical quantity attached to a term (usually at the beginning).
  2. 3. shapes that can be turned into one another with a flip, rotation, or turn