Question

Find the value of x.

Answer 1

Looking at the triangle on the right we can see that is has two sides the same, i.e.: it is an isosceles triangle. From this we know that the two angles opposite these sides will also be equal: i,e:

\[180^{O} = 100^{O} + 2x \] so:
\[x = \frac{180-100}{2}\]

x= 40 degrees.

Answer 2

Thank you very much, especially for showing the work. Would you mind helping me with another if it wouldn't be too much trouble?

Answer 3

No problem.

Answer 4

Okay, I'll open up another question. Hold on.