Al-Khawarizmi

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Across
  1. 1. A field of science that deals with space, universe, and celestial objects.
  2. 5. A branch of mathematics that uses letters as symbols to represent unknown values to solve mathematic problems.
  3. 6. A field of science that studies places, lands, and environments.
Down
  1. 2. An old device that indicates time by the position of the shadow of an object.
  2. 3. Someone who is a specialist in mathematics.
  3. 4. A set of rules to be followed to solve a problem.