Question

how to Find the measure of unknown angles ??

help pls

Answer 1

There is a rule that angles on a straight line always add upto 180 degrees .

Answer 2

So,
7x+11x=180
18x=180
x=180/18
x=10 degrees

Answer 3

Good job, UditKulka!

Answer 4

Thank you for the medal and the comment :)

Answer 5

You are welcome!

Answer 6

The first question you can use equation to solve.
(20x+10)+(3x+9)=180
Now can you solve it?

Answer 7

^

Answer 8

@phopXD

Answer 9

The second question is same the question that UditKulka helped you. The difference is that in this question there is a right angle, which is 90 degrees.
So 90=2x+4x
90=6x
90/6=x
x=15

Answer 10

Right, UditKulka!

Answer 11

Do you solve the equation phopXD?

Answer 12

@phopXD

Answer 13

Let me tell you the solution of the equation, phopXD.
(20x+10)+(3x+9)=180
20x+10+3x+9=180
23x+19=180
23x=180-19
23x=161
x=161/23
x=7

Answer 14

ok @Chineseboy15 and @UditKulka and thank you for the help :)