# Geometry Forum

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

1. ### Tangent to the ellipse

• Replies: 1
• Views: 895
Sep 29th 2010, 06:55 AM
2. ### Perplexing Mensuration Question - sphere in a cone

• Replies: 8
• Views: 903
Sep 29th 2010, 01:46 AM
3. ### Triangle Centers Proof

• Replies: 1
• Views: 483
Sep 28th 2010, 01:30 PM
4. ### Centroid Proof

• Replies: 1
• Views: 784
Sep 28th 2010, 01:27 PM
5. ### Centroid...

• Replies: 2
• Views: 570
Sep 28th 2010, 12:58 PM
6. ### Circumcenter Proof

• Replies: 0
• Views: 729
Sep 28th 2010, 12:44 PM
7. ### Non Euclidean Angle Bisector

• Replies: 1
• Views: 609
Sep 28th 2010, 03:02 AM
8. ### Weingarten maps

• Replies: 0
• Views: 651
Sep 27th 2010, 10:36 PM
9. ### Parallel Postulate

• Replies: 0
• Views: 950
Sep 27th 2010, 05:37 PM
10. ### HS Geometry problems for English learners

• Replies: 0
• Views: 550
Sep 27th 2010, 01:24 PM
11. ### ASA

• Replies: 1
• Views: 692
Sep 27th 2010, 10:27 AM
12. ### Interior Angle Sum

• Replies: 1
• Views: 548
Sep 26th 2010, 11:36 PM
13. ### Geometry Proof

• Replies: 0
• Views: 501
Sep 26th 2010, 09:29 PM
14. ### Parallel Transport

• Replies: 0
• Views: 607
Sep 26th 2010, 09:25 PM
15. ### Parallel Transport on the Plane

• Replies: 0
• Views: 827
Sep 26th 2010, 09:20 PM
16. ### Grade 12 Triangle Problem!

• Replies: 1
• Views: 782
Sep 26th 2010, 10:20 AM
17. ### [SOLVED] Show constructibility

• Replies: 1
• Views: 487
Sep 26th 2010, 10:02 AM
18. ### Finding planes that intersect spheres in 3D vector Geometry

• Replies: 1
• Views: 963
Sep 26th 2010, 09:37 AM
19. ### Common Notions

• Replies: 0
• Views: 1,493
Sep 25th 2010, 01:26 PM
20. ### circles and triangles problem

• Replies: 1
• Views: 545
Sep 25th 2010, 10:41 AM
21. ### Parallelogram vectors

• Replies: 3
• Views: 579
Sep 25th 2010, 09:59 AM
22. ### Cutting a Semicircle into 2 Parts

• Replies: 22
• Views: 1,968
Sep 25th 2010, 09:25 AM
23. ### Prove

• Replies: 4
• Views: 696
Sep 25th 2010, 08:40 AM

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### cosx= .4583?

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