Qn.1].If one angle of a parallelogram is 240  less than twice the smallest angle, find all the angles of the parallelogram.

Qn.2.] If PQRS is a parallelogram then find the angles P, Q, R and S.

Qn.3.] The cost of petrol in a city is 50 Rs per litre. Write an equation with x representing the number of litrs and y representing the total cost[in rupees].

Qn 4] In parallelogram ABCD the bisector of  angle A also bisects BC at P. Prove AD=2AB.

Solution 1:

We have the following parallelogram ABCD.

It is given that,

Hence, the angles are

 

Solution 2:

Post the complete question,

Solution 3:

Given that the cost petrol = Rs. 50/litre,

The equation for total cost y in terms of x is given by

Solution 4:

We have the following diagram,

In the above figure, we have

BP = PC  (1)

We know that the sides opposite to equals angles are equal. Therefore

BP = AB  (2)

And

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