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The value of x (sh.itjust.works)

submitted 3 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 3 months ago (2 children)

I think 125

[–] Siethron 24 points 3 months ago (2 children)

135, that's not a 90 degree angle in the problem. Just visually.

[–] [email protected] 7 points 3 months ago

Oh that's just a cheap trick. You are right, it's 80 degrees despite looking like 90 degrees.

[–] [email protected] 1 points 3 months ago

You are right that is 80° so the value of x will be 135°

[–] [email protected] 8 points 3 months ago* (last edited 3 months ago) (1 children)

Nah, the imagery tricks you. 180 degrees to a line. 180 degrees inside a triangle.

So you can gather the inside unlabeled angle on the triangle on the left is only 80 degrees: (180-[60+40])

So you then know it's 100 on the right side of that +35 leaves you with 45 degrees left for the top of the right one.

180-45=. 135 degrees

[–] [email protected] 6 points 3 months ago

Also if you add up all visible angles you get 135, so I'm sold on that alone. No no no, I won't hear any rebuttals.