Question

PLS PLS ANSWER CORRECTLY!

Answer 1

Step-by-step explanation:

5+4=9

180÷9=20

A=100=C

B=40=D

i>110

ii>20

iii>50

Answer 2

Step-by-step explanation:

It is given that <A=5x and <B=4x.

<A+<B=180 (adjacent angle are 180).

5x+4x=180 =>9x=180.

x=180/9 =20.

<A=20×5=100

and <B=20×4=80.

Now, <A=<C and <B=<D (opp.ang.of llgm are equal).

So, <C=100 , then, <ACD=OCD=50 (OC bisets <C)

again, <D=80, then, <ADC=<ODC=40(OD bosets <D)

Now, in a ∆OCD , we have

<OCD + <ODC + <COD =180.

50+40+<COD =180.

<COD =180-90=90.

Hence, <ODC=40, <COD=90, <OCD=50. Proved...

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