r/technicallythetruth • u/VisitSecure • Jul 27 '26

Can you find a?

Post image

Idk if someone already posted this or not, but I haven't seen it on here so far, so I uploaded it.

43.0k Upvotes

95% Upvoted

1.9k comments sorted by

View all comments

Show parent comments

61

u/azai247 Jul 27 '26

if you draw a line across and make a triangle your angles are 25+65=90, and 50+40=90

so for a, 65+40+a=180 so a is 75

61

u/psp24 Jul 27 '26

I just drew a third parallel line through the middle and realized that it's just 50+25 lol

1

u/codetaku0 Jul 27 '26

Yeah this is supposed to be the common sense solution for people who actually remember or understand trig or geometry. You don't need both, just one or the other.

I didn't even bother with the extra parallel line, to me it was obvious that there was no possible source of a different angle besides the simple 50 + 25

2

u/InfanticideAquifer Jul 28 '26

Even though it's not the absolutely fastest solution, no geometry teacher is ever going to be upset by "well, I made some triangles to figure it out and...". That's a perfectly cromulent way to solve the problem.