# Geometry Forum

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

1. ### proof of Aristarchus' Theorem geomterically

• Replies: 2
• Views: 872
Nov 1st 2012, 02:52 AM

• Replies: 1
• Views: 431
Oct 31st 2012, 03:49 PM
3. ### Tetrahedron

• Replies: 2
• Views: 577
Oct 30th 2012, 01:04 PM
4. ### Triangle

• Replies: 0
• Views: 635
Oct 29th 2012, 10:10 AM

• Replies: 2
• Views: 385
Oct 26th 2012, 11:11 AM
6. ### Perpendicular Bisector and Circumference help

• Replies: 2
• Views: 591
Oct 25th 2012, 04:09 PM
7. ### Similar Triangles question

• Replies: 1
• Views: 440
Oct 24th 2012, 11:09 AM
8. ### a cylinder full of water

• Replies: 2
• Views: 480
Oct 23rd 2012, 02:44 AM
9. ### Questions relating to asymptotes

• Replies: 1
• Views: 374
Oct 22nd 2012, 05:02 PM
10. ### [SOLVED] measure of the complement angle

• Replies: 3
• Views: 723
Oct 22nd 2012, 03:06 AM
11. ### Finding an angle within this triangle

• Replies: 4
• Views: 1,003
Oct 22nd 2012, 01:53 AM
12. ### help about right triangles!

• Replies: 1
• Views: 531
Oct 20th 2012, 11:01 PM
13. ### How to derive Einstein's radius equation?

• Replies: 0
• Views: 415
Oct 20th 2012, 05:35 PM
14. ### Sphere inscribed in pyramid

• Replies: 0
• Views: 577
Oct 20th 2012, 04:06 AM
15. ### Aug 2012 regents question (triangle points)

• Replies: 1
• Views: 4,153
Oct 18th 2012, 04:06 AM
16. ### Need help figuring area of outfield of a baseball field

• Replies: 9
• Views: 4,150
Oct 17th 2012, 08:40 PM
17. ### Drawing a circle with squares

• Replies: 1
• Views: 853
Oct 15th 2012, 07:35 AM
18. ### Best way to estimate number of hexagonal facets on an insect eye if assume a sphere?

• Replies: 2
• Views: 1,740
Oct 15th 2012, 07:16 AM
19. ### hello math wizards! this is a problem about solid mensuration.help me please! thanks

• Replies: 3
• Views: 2,099
Oct 14th 2012, 10:01 AM
20. ### geometry help

• Replies: 2
• Views: 523
Oct 13th 2012, 10:30 PM
21. ### Cylinder exterior surface area

• Replies: 4
• Views: 3,168
Oct 12th 2012, 12:42 AM

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### cosx= .4583?

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