Question

7.
In the figure, ADCE is a parallelogram. Then area of A ECB equals
D5m
3.5 m
a) 21 m²
b) 15.5 m²
c) 3.5 m2
d) 6.5 m²

Answer 1

Answer:

We can draw a parallel line passing through D and let it cut at E with BC. Then ABED becomes a parallelogram ( all the opposite sides are parallel, hence equal opposite sides and equal opposite angles as per basic property.)

Now, AB=DE=y and AD=BE=x

In the triangle DEC

angle E external = angle(C+D) again angle E= angle A = 2z

Or 2z= z+ angle D or angle D=z

Noe using the trigonometric formula

CE/sin z= DE/sin2z

Step-by-step explanation:

Answer 2

Answer:

if we can take Adce is a parallelo gram it's Dc value 5m and height is 3.5m and the base value is 7m and we can do as the parallelogram of parallel to DC||AB this we can take as the union and that's answer is 3.5m please make it as brainliest answer That's it