Question

Q.13) Find the value of x.
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Answer 1

Answer:

45

Step-by-step explanation:

we know that

<ABC+<ACB+<BAC=180

<ABC+(180-<ACD)+<BAC=180

x+(180-140)+x+50=180

2x+40+50=180

2x=180-90

2x=90

x=90/2

x=45

Answer 2

Answer:

the angle ACB(y) is 140+y=180(linear pair of angles)

y=180-140=40

x+x+50+40=180(sum of triangle)

2x+90=180

2x=180-90

2x=90

x=90/2

x=45