# Geometry Forum

Geometry Help Forum: Euclidean, basic geometric proofs, volumes, perimeters

1. ### collinear points

• Replies: 18
• Views: 1,341
May 3rd 2009, 08:13 AM
2. ### Angle between plane and xy-plane

• Replies: 6
• Views: 1,159
May 3rd 2009, 07:31 AM
3. ### polar form of ellipse

• Replies: 2
• Views: 2,208
May 3rd 2009, 07:15 AM
4. ### Some Questions !

• Replies: 1
• Views: 604
May 3rd 2009, 03:09 AM
5. ### Volume of Sphere

• Replies: 4
• Views: 609
May 2nd 2009, 08:01 PM
6. ### Area of Rectangle

• Replies: 3
• Views: 681
May 2nd 2009, 06:46 PM
7. ### a difficult geometry proof

• Replies: 2
• Views: 1,052
May 1st 2009, 05:31 PM
8. ### Regular Heptagon

• Replies: 2
• Views: 599
May 1st 2009, 12:33 PM
9. ### the matrix

• Replies: 6
• Views: 295
Apr 30th 2009, 08:16 PM
10. ### EndPoint based on Length and Angle

• Replies: 4
• Views: 760
Apr 30th 2009, 11:10 AM
11. ### Ortho-centre of triangle?

• Replies: 0
• Views: 547
Apr 30th 2009, 07:38 AM
12. ### Coordinates of linked equidistant points on R3

• Replies: 0
• Views: 514
Apr 29th 2009, 06:00 PM
13. ### Formula of Parabola = ??

• Replies: 2
• Views: 451
Apr 29th 2009, 06:36 AM
14. ### angle of the triangle

• Replies: 8
• Views: 929
Apr 28th 2009, 10:31 PM
15. ### Geometry Circles

• Replies: 5
• Views: 743
Apr 28th 2009, 02:17 PM
16. ### Distance between points in a square

• Replies: 1
• Views: 473
Apr 28th 2009, 09:47 AM
17. ### Area of parallelogram formed(ellipse)?

• Replies: 0
• Views: 611
Apr 28th 2009, 08:08 AM
18. ### Find locus of orthocenter of the triangle?

• Replies: 1
• Views: 1,001
Apr 28th 2009, 07:56 AM
19. ### Find QP.QR(Hyperbola)?

• Replies: 0
• Views: 531
Apr 28th 2009, 07:46 AM
20. ### Midpoint formula (proof) ??

• Replies: 8
• Views: 3,579
Apr 28th 2009, 04:32 AM

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### cosx= .4583?

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