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Nov
22
awarded  Yearling
Sep
28
comment When to use congruent vs approximately?
Shouldn't this be posted on the math page?
Sep
26
answered Circle of Apollonius proof question
Sep
26
revised Does a rhombus bisector creating two equal triangles by reflection imply a square?
added 150 characters in body
Sep
26
comment Does a rhombus bisector creating two equal triangles by reflection imply a square?
The intuitive idea underlying congruence is "perfectly overlap" if properly aligned. If they overlap by reflection, then they are congruent.
Sep
26
comment Does a rhombus bisector creating two equal triangles by reflection imply a square?
@Dgrin91 I think you are not understanding correctly what it means to "reflect" around something. In a rhombus, to reflect about a diagonal would be like folding the rhombus along its diagonal. If it is indeed a rhombus, the two triangles will match perfectly.
Sep
26
comment Does a rhombus bisector creating two equal triangles by reflection imply a square?
@Dgrin91 My response is about "reflection" about the diagonal. You are mistaken about the triangles on either side of a diagonal.
Sep
26
revised Does a rhombus bisector creating two equal triangles by reflection imply a square?
added 237 characters in body
Sep
26
answered Does a rhombus bisector creating two equal triangles by reflection imply a square?
Sep
26
answered If a quadrilateral is a parallelogram and a rhombus, does that imply it is a square?
Feb
24
comment What is category theory useful for?
@Khromonkey others seem to have already covered the content of your question. I'll direct you to the answers of the other posters.
Feb
24
answered What is category theory useful for?
Feb
24
awarded  Supporter
Dec
13
answered Proving that this $(X,Y)$ is not uniformly distributed over the unit disk
Dec
13
revised Logic Puzzle from “101 Puzzles in Thought and Logic”
added 47 characters in body
Dec
13
revised Logic Puzzle from “101 Puzzles in Thought and Logic”
added 31 characters in body
Dec
13
answered Logic Puzzle from “101 Puzzles in Thought and Logic”
Dec
13
answered The set of continuously differentiable functions such that $f(0)=0$, $f(1)=1$, $|f'|\le 3/4$
Dec
13
awarded  Teacher
Dec
13
revised antiderivative of $\frac{1}{4}\sin(2x)$
added 36 characters in body