silvernight269:

2 months ago
silvernight269:

2 months ago
silvernight269:

@dude

2 months ago
563blackghost:

Not quite. Remember that vertical angles are equal so the angle at the opposite of 25 is 25 as well. If you look at your lines you can see that the tranversal causes a split of a pair of supplementary angles. This means that the pair creates a 180 degree angle (definition of sup. angles). This also applies to x based on the same side exterior angles (meaning that 25 and x create a 180 degree angle). $$\large\bf{180-25=x}$$

2 months ago
silvernight269:

X=55

2 months ago
563blackghost:

$$\bf{55+25=80}$$ you need 180. $$\bf{180-25=155}$$

2 months ago
silvernight269:

Ok

2 months ago
silvernight269:

It would be 155. See you are finding x.