Cyniez to Asklemmy@lemmy.ml • 2 months agoCan anyone solve this math for me?lemmy.worldimagemessage-square35fedilinkarrow-up1109arrow-down114
arrow-up195arrow-down1imageCan anyone solve this math for me?lemmy.worldCyniez to Asklemmy@lemmy.ml • 2 months agomessage-square35fedilink
minus-squareRentlarlinkfedilink57•edit-22 months agoNote that the problem states that the outer shape is a quarter circle, information not provided in OP’s question. Knowing it is a quarter circle is important because it allows us to validate that the bottom-right angle is 90 degrees.
minus-square@flicker@lemmy.dbzer0.comlinkfedilinkEnglish3•2 months agoI actually came to the comments to see if we had this information! Thanks.
minus-square@gezginorman@lemmy.mllinkfedilinkEnglish2•2 months agobut does it have to be a given, or can we actually prove that it has to be
minus-square@olosta@lemmy.worldlinkfedilink1•2 months agoThe explanation don’t explain why AE must be a diameter of the circle. What makes that obvious?
minus-square@kambusha@sh.itjust.workslinkfedilink3•2 months agoThanks. I had the same Q: https://en.m.wikipedia.org/wiki/Thales’s_theorem
minus-square@tehn00bi@lemmy.worldlinkfedilink3•2 months agoHow have I had years of math and not seen this? I mean, it’s not super useful for me, but I would have thought I would have seen something like this in pre calculus at least.
minus-square@maxprime@lemmy.mllinkfedilink1•2 months agoI teach this to my grade 9 class in Canada. It’s on the curriculum.
minus-square@tehn00bi@lemmy.worldlinkfedilink1•2 months agoNice. I have no recollection of seeing this before.
X=15
Note that the problem states that the outer shape is a quarter circle, information not provided in OP’s question.
Knowing it is a quarter circle is important because it allows us to validate that the bottom-right angle is 90 degrees.
I actually came to the comments to see if we had this information! Thanks.
but does it have to be a given, or can we actually prove that it has to be
The explanation don’t explain why AE must be a diameter of the circle. What makes that obvious?
Thales’ Theorem
Thanks. I had the same Q: https://en.m.wikipedia.org/wiki/Thales’s_theorem
How have I had years of math and not seen this? I mean, it’s not super useful for me, but I would have thought I would have seen something like this in pre calculus at least.
Geometry, class six or seven.
I teach this to my grade 9 class in Canada. It’s on the curriculum.
Nice. I have no recollection of seeing this before.
Tbf most Canadian grade 9 teachers skip it.
Wow, that’s cool
Ooh clever