Maths Crossword Puzzle

123456
Across
  1. 3. A plane with two perpendicular lines is known as
  2. 5. Any triangles two sides are equal and one unequal
  3. 6. Any number written in p/q form where p and q are integers and q is not equal to zero is?
Down
  1. 1. Angle is more than 180 degrees and less than 360 degrees
  2. 2. Any polynomial with one term is known as
  3. 4. Sum of two angles is equal to 180 degrees