Yes Thales did in fact he was credited for it
"swagg boo"
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5 !
a five sided shape in geometry is called a pentagon
Basic geometry terms are lines, points segments and rays, so it should be "point".
Pentagons in normal (Euclidean) geometry can have at most three right angles, and the other two will be obtuse.However, in hyperbolic geometry, it is possible to construct a pentagon with 5 right angles, which is called a rectapentagon.
ill give you a tip do it yourself