Question

please solve this problem ​

Answer 1

Answer:

Step-by-step explanation:Construct a trapezium ABCD ,AB||CD,AB=7CM,BC=5CM ,CD=3CM,angleC=110°

ANSWER

Answer 2

Step-by-step explanation:

Given:

∆FEC ∆FEC ≅ ∆GDB

EC= BD ( by CPCT)..........(1)

Given:

∠1= ∠2

AE AD ………….. …… ..(2)

(Sides opposite to equal angles are equal)

From eq 1 and 2

AE/EC = AD/BAD

DE || BC

(Converse of Basic proportionality Theorem)

∠1 = ∠3 and ∠2 = ∠4

[ Corresponding angles]

In ∆ADE and ∆ABC

∠A = ∠A        (Common)

∠1 = ∠3          (proved above)

∠2 = ∠4           (proved above)

∆ADE ~ ∆ABC   [ by AAA similarity criterion]

hence, proved!!