Question

plz solve this question on notebook
plzzzz​

Answer 1

Answer:

OK solved notebook take time

Answer 2

Answer:

a)

in triangle ABC

let angle C is z

in triangle ABD angle D=180-90=90

40 + X +90 =180

40+X =90

X=90-40=50

in triangle BDC

y+90+z=180

y+z=90

z=90-y

and AB = AC

so it is a isocless triangle

with angle B = angle C

means X+y=Z

50+y=90-y

2y=40

y=20

hope this is helpful