Question

please help me Guys please solve it
$please \: help \: plzzz \: answer \: these \: questions \: correctly \: plzzzzz$
$number12and13please \: solve \: it \: correctly \: tomorrow \: is \: my \: exam \: plzzzzz$
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Answer 1

12.Ans

a=80 degree (alt. opp. angles)

b=c=100 degree (corresponding angles)
_____________
13..Ans


angle DBA =70°(vetically opposite angles)

angle BDA=180°-120°(linear pair)

=60°

angle DBA+BDA+X=180° (angle sum property of a traingle)

70°+60°+X=180°

130°+X=180°

X=180°-130°

X=50°

Now,

angle BDE=180°-120°(Linear pair)

=60°

then,

angle Y =angle BDE(corresponding angles)

60°=60°

Answer 2

y=50° and x=155°

angle B= angle C =75°

angle C= angle BCF +angle FCD

75°=y+25°

y=50°

FE ¦¦ CD so CF is the tranversal

angle FCD + x=180

x = 180 -25

x=155°