The sum of the measures of the four angles of the quadrilateral is
180°
90°
120°
360°
If the diagonal AC, BD of a parallelogram meet at O, then
OA= OC
OA=OB
OA= OD
OA= BD
If angles P, Q, R, and S of the quadrilateral PQRS, taken in order, are in the ratio 3 : 7 : 6 : 4, then PQRS is a
rhombus
parallellogram
trapezium
kite
In a square ABCD, the diagonals bisect at O. Then triangle AOB is
an equilateral triangle.
an isosceles but not a right angled triangle.
a right angles but not an isosceles triangle.
an isosceles right angled triangle.
Sum of the angles of exterior angles of a polygon is
360o
180o
720o
600o
Sum of exterior angles of a quadrilateral in right angles
1
2
3
4
The quadrilateral in which the diagonals bisect each other and they are perpendicular to each other.
Rectangle
Rhombus
Parallelogram
Trapezium
Each interior angle of a regular polygon of n sides (n ≥ 3) contains
4n right angles
2(n + 1)/n right angles
2(n - 1)/n right angles
2(n - 2) /n right angles
The number of sides of a regular polygon, if each of its interior angles is 135°, is given by
6
8
10
In a rhombus ABCD, its diagonals intersect at 'O'. Then AOB=
45o
90o
none of these
