Question

5. In Fig. 9.23, ABCD is a quadrilateral and AC is one of its diagonal. Show that ABCD is a parallelogram and finds its area.​

Answer 1

Answer:

the area is 18 cm squar is answer

Answer 2

Answer:

area of parralelogram is 20cm²

Step-by-step explanation:

here triangle DCA congruent to triangle BAC(SAS)

SO. HERE DC ll AB

CA is transversal

also DA=CB( CPCT)

SO it's a parralelogram

area of parralelogram is = sum of two triangle

=. (1/2×4×5)2= 20cm ²

that's it