Question

please help me with the answer, don't type rubbish I'll report you❤​

Answer 1

Step-by-step explanation:

1.] Given : ΔABC AB is the greatest side  

So,  AB > BC and AB > AC

We know that the angle opposite to the greatest is also the greatest one

So, ∠C > ∠A  → (1)   and    ∠C > ∠B  → (2)

Adding the equation (1) and (2)

⇒2∠C > ∠A + ∠B

Adding ∠C on both sides

⇒3∠C > ∠A + ∠B + ∠C  

⇒3∠C > 180°         [ ∵ Sum of the angle in triangle = 180° ]

∴  ∠C > 60°

2.]

Given, E is mid point of AD

Also EB∥DF

⇒ B is mid point of AF [mid--point theorem]

so, AF=2AB (1)

Since, ABCD is a parallelogram,

CD=AB

⇒AF=2CD

AD∥BC⇒LB∥AD

In ΔFDA

⇒LB∥AD

⇒

LD

LF

=

AB

FB

=1 from (1)

⇒LF=LD

so, DF=2DL