Question 1 :
P and Q are the mid-points of the opposite sides AB and CD of a parallelogram ABCD. AQ intersects DP at S and BQ intersects CP at R. What type of quadrilateral would be PRQS?

Question 3 :
What is the sum of all the angles of a quadrilateral?

Question 4 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d214f59b460d7261f537.PNG' /> In ∆ ABC and ∆ DEF in the above fig, AB = DE, AB || DE, BC = EF and BC || EF. Vertices A, B and C are joined to vertices D, E and F respectively. Quadrilateral ABED is a ______________

Question 5 :
ABCD is a parallelogram. If its diagonals are equal, then find the value of $\angle ABC$.

Question 6 :
ABCD is a rectangle and P, Q, R and S are mid-points of the sides AB, BC, CD and DA respectively. The quadrilateral PQRS is a __________.

Question 7 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d21bf59b460d7261f540.PNG' /> ABCD is a trapezium given in the above fig in which AB || CD and AD = BC. Diagonals AC and BD are unequal. TRUE or FALSE ?

Question 9 :
Diagonals of a parallelogram ABCD intersect at O. If $\angle BOC = 90^{\circ}$ and $\angle BDC = 50^{\circ}$, then $\angle OAB$ is

Question 10 :
In quadrilateral ABCD, $\angle A + \angle D = 180^{\circ}$. What special name can be given to this quadrilateral?