Question

Please HELP!! =]

Answer 1

Since it is an isosceles triangle, angles R and T have the same value, right?

Answer 2

Or I should say angles SRT and RTS have the same value.

Answer 3

yep!

Answer 4

Okay, great! So, since we know SRT = 5x - 30, then we also know RTS = 5x - 30

Answer 5

Now what is the relation between angles RTS and STU?

Answer 6

Both angles..

Answer 7

Correct, but what do you see when they are next to each other? What do they form?

Answer 8

Close, take a look at RTU, which is a 180 degree angle, or a line, right?

Answer 9

okay

Answer 10

@dan815

Answer 11

So now that we know RTU makes a line (or is 180 degrees), we know that RTS and STU combined are 180 degrees, right?

Answer 12

right..

Answer 13

RTS = 5x - 30 and STU = 5x, and we know RTS + STU = 180, all you have to do is substitute and solve for x!

Answer 14

nvm I Dont understand,