If D is midpoint of BC and area (ΔABC) = 20 sq.unit then area (Δ ABD) =
40 sq. units
10 sq. units
5 sq. units
20 sq. units
One angle of a cyclic quadrilateral is 60o.Then its opposite angle is
130o
100o
300o
120o
The central angle of arc ABC is 220o ∠ABC is
60o
65o
70o
75o
ABCD is a cyclic quadrilateral ∠A : ∠C = 3 : 2 ∠B : ∠D = 4 : 1 then ∠D =
30o
36o
45o
90o
In a parallelogram if diagonals are equal in length then it is
Rhombus
Square
Rectangle
None of these
A, B, C, D are four points of a circle in the order. A and C are the end points of a diameter, then ∠ADB can be
160o
180o
Quadrilateral formed by joining the midpoints of any quadrilateral is always
a rectangle
a square
a rhombus
a parallelogram
The length of the complete circle is called its
Radius
Diameter
Circumference
Consecutive angles of a parallelogram are
Supplementary
Complementary
Equal
Which of he following is not true for a parallelogram?
Opposite sides are equal
Opposite angles are equal
Opposite angles are bisected by the diagonals
Diagonals bisect each other