# Geometry Forum

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

1. ### Prove that pyramid ABCS is regular

• Replies: 0
• Views: 487
Oct 3rd 2011, 05:50 AM
2. ### prove that triangle is equilateral

• Replies: 1
• Views: 558
Oct 3rd 2011, 12:07 AM
3. ### [SOLVED] Find total surface area of cone...

• Replies: 2
• Views: 971
Oct 2nd 2011, 11:36 AM
4. ### Finding Perimeter and Area

• Replies: 5
• Views: 568
Oct 2nd 2011, 09:07 AM
5. ### Proofs/ counterexamples

• Replies: 3
• Views: 7,140
Oct 1st 2011, 11:29 AM
6. ### Intersection of Line and Hyperbola

• Replies: 5
• Views: 872
Sep 30th 2011, 01:51 AM
7. ### Non intersecting circles...

• Replies: 2
• Views: 1,047
Sep 29th 2011, 01:23 PM
8. ### SAT Test Question (Isosceles)

• Replies: 4
• Views: 827
Sep 29th 2011, 03:57 AM
9. ### Dot product of 2 vectors

• Replies: 4
• Views: 550
Sep 28th 2011, 04:53 AM
10. ### Circle inscribing circles

• Replies: 1
• Views: 552
Sep 27th 2011, 06:46 PM
11. ### How to find coordinates of the focus and the equation of the directrix of the parabol

• Replies: 1
• Views: 1,507
Sep 27th 2011, 03:13 PM
12. ### Angles in cyclic quadrilateral in semi-circle

• Replies: 1
• Views: 3,419
Sep 26th 2011, 03:09 PM
13. ### Simple derivations on geometrical figures .

• Replies: 2
• Views: 705
Sep 26th 2011, 09:39 AM
14. ### area of a triangle with vertices

• Replies: 5
• Views: 1,858
Sep 23rd 2011, 08:39 AM
15. ### Pairs and pieces

• Replies: 3
• Views: 695
Sep 22nd 2011, 09:52 AM
16. ### two cicles problem

• Replies: 3
• Views: 390
Sep 22nd 2011, 12:27 AM
17. ### Vectors in 3 space

• Replies: 8
• Views: 904
Sep 21st 2011, 07:37 PM
18. ### Basic Conditional Statements:

• Replies: 3
• Views: 503
Sep 21st 2011, 04:01 PM
19. ### [SOLVED] Point on Circle Closest to Another Point on Circle

• Replies: 8
• Views: 2,521
Sep 20th 2011, 06:21 AM
20. ### Random blocks that fit together

• Replies: 0
• Views: 470
Sep 18th 2011, 11:11 AM
21. ### median of a triangle

• Replies: 1
• Views: 430
Sep 17th 2011, 12:09 AM

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### cosx= .4583?

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