Mathematics Is Fun Part 2

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Across
  1. 3. 13xyz - 6xy + 2xz - xyz
  2. 4. (9x^2 × 2x^4)/6x^4
  3. 7. In trapesium ABCD, angle A = 68°, angle B = 56° and angle C = 89°. Find the value of angle D
  4. 8. In parallelogram ABCD, angle A = 78° and is opposite to angle C. Angle B is opposite to angle D. Find the value of angle B.
  5. 9. In a straight line, there's 2 angles in which one = 56°. Find the value of the other angle
  6. 11. 6(2a - 5) + 8( 5a + 10)
  7. 12. 5x^5 × 8x^4
  8. 13. In triangle ABC, angle B = 57° and angle C = 76°. Find the value of angle A.
Down
  1. 1. 4y - 3y + 5xy
  2. 2. In isosceles triangle XYZ, angle Y = 68° and angle X and Z has the same value. Find the value of angle X or angle Z.
  3. 3. 46(4x^2 + 2 )
  4. 4. A polygon has 10 sides, what is the size of each exterior angles?
  5. 5. (x ÷ 4)( 80÷5) when x is 16
  6. 6. There's 3 angles that rounds a point, which one = 80° and the other one = 67°. Find the value of the other angle.
  7. 7. 3(10×6) - 8(x ÷5) when x is 20
  8. 10. A polygon has 17 sides, what is the sum of the interior angles?
  9. 11. 56 × 56 × 56 using index notation