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2h
comment Geometry construction problem
@RoryDaulton You're welcome. I'm happy to help.
5h
comment Geometry construction problem
There is something that doesn't fit in the equation you got. I think the second term of the RHS should be $2 \sqrt{r^2-(d-z)^2}$. If you correct it, you will get a quadratic equation.
1d
awarded  Constituent
2d
comment Construct quadrangle with given angles and perpendicular diagonals
@HandeBruijn Since the OP wanted a compass-and-straightedge construction I thought it would be easier use equation(4) as it is. But it is possible to use another method (a graphical or algebraic one) to solve equation (4).
Dec
17
revised Construct quadrangle with given angles and perpendicular diagonals
added 6 characters in body
Dec
17
revised Construct quadrangle with given angles and perpendicular diagonals
added 110 characters in body
Dec
17
answered Construct quadrangle with given angles and perpendicular diagonals
Dec
16
revised Requiring a Geometrical proof
adding most known terms
Dec
16
answered Requiring a Geometrical proof
Dec
10
awarded  geometry
Dec
9
revised Easy little geometry prob
adding more details
Dec
9
answered Easy little geometry prob
Dec
9
awarded  Caucus
Dec
3
comment Computing area of triangle via equations of medians
The answer is 4, but my solution is not a polished one.
Nov
4
revised Problem on Law of Sines from 'Geometry Revisited'
correcting a typo
Nov
4
comment Problem on Law of Sines from 'Geometry Revisited'
@Mick Thanks for pointing out the typo. I'll fix it.
Nov
4
comment Problem on Law of Sines from 'Geometry Revisited'
@Mick I agree the two circles seem like touching each other at only one point, but in fact they aren't.
Nov
4
comment Problem 1.1.4 from “Geometry Revisited”
Thanks Mick, for pointing out my typo. I've just corrected it.
Nov
4
revised Problem on Law of Sines from 'Geometry Revisited'
correcting a typo
Oct
18
awarded  Necromancer