SHORT ANSWER TYPE QUESTIONS :- 31. Write the additive inverse of 19/-6.
32. Mention the rational number that has no reciprocal.
33. Define a rational number.
34. Solve 7x – 12 = 16.
35. Solve 3 (x - 4) = 21
36. What is the sum of all interior angles of a quadrilateral ?
37. Name the quadrilateral that has one pair of parallel sides.
38. Name the parallelogram in which one of its angle is 90˚.
39. How many diagonals does a regular hexagon has?
40. angle A and angle B are two adjacent angles of a parallelogram. If angle A = 70˚, then what is the measure Of angle B?