Question

in the given figure if x = 30 degree can you say that it is a straight line? give reason

Answer 1

HEYADUDE ☺☺☺

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ANSWER ☺☺

yeah it is a straight line coz.....a straight line has a straight angle ie = 180°

therefore to prove it here is solution ...let us add these all angles

<AOC +<COD+<COD

Substituting the value of respective angles we get

2x+10 + x+10 + 3x-20

if x=30°

then

2*30+10 + 30+10 + 3*30-20

60+10 + 40 + 90-20

70 + 40 + 70

=180°

since the sum total of angles is 180°

Therefore line segment AOB is a straight line

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VIELEN DANK ✌✌

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