Question

Seema placed a light bulb at a point O on the ceiling and deirectly below it

placed a table. Now she put a cardboard of shape ABCD between table

and lighted bulb. Then a shadow of ABCD is cast on the table as A|

B

|

C

|D

|

.

Quadrilateral A

|

B

|

C

|D

|

is an enlargement of ABCD with scale factor 1 : 2.

Also, AB= 1.5 cm, BC= 2.5 cm, CD= 2.4 cm and AD= 2.1 cm, A=105 , B=

100 , C= 70 and D= 85°j​

Answer 1

AB=1•5cm,BC=2•5cm,CD=2•4cm,and AD=2•1cm,

B=115