Question

7. Name the quadrilateral whose diagonals bisect each other.
8. The product of a rational number and its reciprocal is.....
(a) 0
(b) 1
(c)-1 (d) None of these
9. Sum of all angles of a quadrilateral is (a)
100°
(b) 180° (c) 120° (d) 360°
10. A hexagon has 3 sides (b) 4 sides (c) 5 sides (d) 6 sides
SECTION - B
11. How many sides does a regular polygon have if each of its exterior angles is 15°
12. Solve 5x7x - 2.
13. Is 121 a perfect square? Give reason.
14. Solve:
-15​

Answer 1

Step-by-step explanation:

A quadrilateral whose diagonals bisect each other at right angles is a rhombus. each other at right angles at M. So AB = AD and by the first test above ABCD is a rhombus. 'If the diagonals of a parallelogram are perpendicular, then it is a rhombus.