Question 1 :
Can the angles $110^o, 80^o, 90^o$ & $105^o$ be the angles of quadrilateral?
Question 3 :
In a quadrilateral $ABCD$, the angles $\angle A, \angle B, \angle C$ and $\angle D$ are in the ratio $2 : 3 : 4 : 6$. Find the measure of each angle of the quadrilateral
Question 5 :
Area of the parallelogram formed by the lines<br>$y=mx, y=mx+1, y=nx$ and $y=nx+1$ equals<br>
Question 6 :
The measure of an angle of a parallelogram is $70^0$. Find its remaining angles.
Question 7 :
The angle of a quadrilateral are respectively $120^o, 73^o, 80^o$. Find the fourth angle
Question 8 :
The diagonals of a quadrilateral are equal and bisect each other. The quadrilateral has to be
Question 9 :
Given that ABCD is a parallelogram. If AC is perpendicular to BD but is not equal to it then ABCD is a Rhombus.<br/>
Question 10 :
What is the maximum possible area of a parallelogram with one side of length 2 meters and a perimeter of 24 meters ?
Question 11 :
If in quadrilateral $ABCD$, $AB \parallel CD$, then $ABCD$ is necessarily a
Question 12 :
Let $n\geq 4$ be a positive integer and let $l_1, l_2,.... l_n$ be the lengths of the sides of arbitrary n-sided non-degenerate polygon P. Suppose $\displaystyle\frac{l_1}{l_2}+\frac{l_2}{l_3}+....+\frac{l_{n-1}}{l_n}+\frac{l_n}{l_1}=n$. Consider the following statements.<br>I. The lengths of the sides of P are equal.<br>II. The angles of P are equal.<br>III. P is a regular polygon if it is cycle. Then.<br>
Question 13 :
If the points A$ (a, -10)$, B $(6, b)$, C $(3, 16)$, D $(2, -1)$ are the vertices of a parallelogram ABCD, find the values of $a$ and $b$
Question 14 :
Opposite angles of a quadrilateral $ABCD$ are equal. If $AB = 4$ cm, determine $CD$.<br/>
Question 15 :
A triangle ABC in which AB=AC, M is a point on AB and N is a point on AC such that if BM=CN then AM=AN
Question 16 :
State 'true' or 'false':The diagonals of a quadrilateral bisect each other.
Question 17 :
Tangents <i>PA</i> and <i>PB</i> drawn to $ x^2+y^2=9 $ from any arbitrary point <i>'P</i>' on the line $ x+y=25 $. Locus of midpoint of chord <i>AB</i> is
Question 18 :
Two adjacent angles of a parallelogram are $2x+ 30$ and $5x + 30$. Then the value of $x$ is ___ .<br/>
Question 19 :
If A $(1, 0)$, B$ ( 5, 3)$, C $(2,7)$ and D $( x, y$) are vertices of a parallelogram ABCD, the co-ordinates of D are  
Question 20 :
L and M are the mid-points of sides AB and DC respectively of parallelogram ABCD. Prove that segments DL and BM trisect diagonal AC. StateTrue or False.