# Geometry Forum

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

1. ### triangle altitude help

• Replies: 2
• Views: 289
Nov 30th 2013, 02:57 PM
2. ### convex pentagon area

• Replies: 1
• Views: 259
Nov 30th 2013, 12:49 PM
3. ### [SOLVED] angle bisector theorem help

• Replies: 1
• Views: 330
Nov 30th 2013, 11:24 AM
4. ### Prove or disprove that two angles are equal in a quadrilateral

• Replies: 2
• Views: 475
Nov 28th 2013, 08:03 AM
5. ### pythagorean theorem help

• Replies: 4
• Views: 452
Nov 25th 2013, 07:30 PM
6. ### Area of a hyperbolic triangle

• Replies: 1
• Views: 660
Nov 23rd 2013, 07:11 PM
7. ### Best Book to Learn Geometric Proofs

• Replies: 0
• Views: 593
Nov 20th 2013, 06:48 PM
8. ### geometry tricky: 2n dota and 3n lines

• Replies: 0
• Views: 703
Nov 17th 2013, 10:07 PM
9. ### Math word problem

• Replies: 1
• Views: 429
Nov 16th 2013, 03:59 PM
10. ### Trying to derive the distance of a point from a line using maxima/minima.

• Replies: 3
• Views: 486
Nov 14th 2013, 08:28 PM
11. ### Challenging slope, point problem I need help with.

• Replies: 10
• Views: 959
Nov 13th 2013, 05:06 PM
12. ### convention in straight line equation?

• Replies: 4
• Views: 381
Nov 13th 2013, 10:01 AM
13. ### Area of triangle in coordinate geometry

• Replies: 8
• Views: 2,426
Nov 13th 2013, 08:04 AM
14. ### Vector Proof for the Centroid of a triangle. Not a clue

• Replies: 1
• Views: 1,183
Nov 7th 2013, 01:32 PM
15. ### Rhombus Pythagorean!

• Replies: 3
• Views: 387
Nov 7th 2013, 03:20 AM
16. ### Isosceles Triangle

• Replies: 2
• Views: 378
Nov 7th 2013, 12:05 AM

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### cosx= .4583?

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