Question Text
Question 2 :
The perimeter of a parallelogram is ...................... when the sides are $12$ cm and $5$ cm.
Question 4 :
A quadrilateral whose each angle is a right angle is a
Question 5 :
In a quadrilateral $ABCD$ <br> $AB\, +\, BC\, +\, CD\, +\, DA> 2AC$<br/><b>Say true or false.</b><br/>
Question 6 :
If in quadrilateral $ABCD$, $AB \parallel CD$, then $ABCD$ is necessarily a
Question 7 :
In $\bigtriangleup \: ABC$ , $E$ and $F$ are mid-points of sides $AB$ and $AC$ respectively. If $BF$ and $CE$ intersect each other at point $O$, then the $\bigtriangleup \:OBC$ and quadrilateral $AEOF$ are equal in area.
Question 8 :
Two consecutive angles of a parallelogram are in the ratio $1 : 3$, then the smaller angle is :<br/>
Question 9 :
The point of intersection of the diagonals of a quadrilateral divides one diagonal in theratio $1 : 2 .$ Can it be a parallelogram?
Question 10 :
$T_{m} $denotes the number of Triangles that can be formed with the vertices of a regular polygon of $m$ sides. If $T_{m+1}-T_{m}=15, $then $m=$<br><br>
Question 12 :
Let ABCD be a parallelogram such that AB = q , AB = p, and $\angle BAD $ be an acute angle. If r is the vector that coincides with the altitude directed from the vertex B to the side AD, then r is given by
