Three angles of a quadrilateral are 75o, 90o and 75o. The fourth angle is
90o
95o
105o
120o
In the given figure, D is midpoint of ΔABC. If ar ΔABC = (2x2 - 2)units, then ar ΔABD =
(x - 1)2
(x + 1)2
2(x - 1) (x + 1)
(x + 1) (x - 1)
Two angles of a quadrilateral are 60o and 70o and other two angles are in the ratio 8 : 15 then the remaining two angles are
80o, 150o
90o, 140o
100o, 130o
110o, 120o
ABCD is a cyclic quadrilateral ∠A : ∠C = 3 : 2 ∠B : ∠D = 4 : 1 then ∠D =
30o
36o
45o
Quadrilateral formed by joining the midpoints of any quadrilateral is always
a rectangle
a square
a rhombus
a parallelogram
If D is midpoint of BC and area ΔABD = 1/√2 sq.units, then area ΔABC is
1/√2 sq. units
√2 sq. units
2 sq.unit
None of these
The length of the complete circle is called its
Radius
Diameter
Circumference
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
If M is the midpoint of hypotenuse PR of a right angled triangle PQR right angled at Q then.
MP = MR
MQ = MR
MQ = MP
All of these
The figure obtained by joining the mid points of the sides of a rhombus, taken in order, is
A rhombus
A rectangle
A square
Any parallelogram
