Is there a way to draw a circle within a triangle without a compass? (lemmy.world)

submitted 9 months ago by favrion@lemmy.world to c/math@lemmy.world

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[-] solrize@lemmy.world 3 points 9 months ago

This might be what you want:

https://en.m.wikipedia.org/wiki/Poncelet%E2%80%93Steiner_theorem

[-] mozz@mbin.grits.dev 2 points 9 months ago

Specifically this part:

it is naturally understood that circles and their arcs cannot be drawn without the compass

Some straight-line constructions, you might or might not need a compass to locate properly in order to draw them. But as the tools are usually defined for these kinds of constructions, actually drawing the circle without a compass is not possible.

[-] solrize@lemmy.world 4 points 9 months ago

Well. If you can find the center of the inscribed circle and its tangent points on the triangle, that might be what OP wanted.

this post was submitted on 25 Jan 2024

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