Geometry Forum

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

1. Prove that............

• Replies: 1
• Views: 369
Dec 15th 2014, 07:30 AM
2. give up even lemon? Hello Monica

• Replies: 0
• Views: 329
Dec 15th 2014, 01:51 AM
3. NYCIML Problem: Can't Do Proof

• Replies: 1
• Views: 1,162
Dec 14th 2014, 07:00 PM
4. tetraherdon shown

• Replies: 4
• Views: 332
Dec 14th 2014, 10:04 AM
5. help with a vector question

• Replies: 2
• Views: 332
Dec 11th 2014, 12:59 PM
6. COORDINATEing...

• Replies: 6
• Views: 356
Dec 11th 2014, 07:37 AM
7. Proofs with parallelograms.

• Replies: 1
• Views: 423
Dec 10th 2014, 07:42 PM
8. Help with vector proof

• Replies: 1
• Views: 309
Dec 10th 2014, 07:28 PM
9. Proof with an isosceles triangle.

• Replies: 4
• Views: 353
Dec 9th 2014, 09:23 PM
10. A perpendicular line in an isosceles triangle

• Replies: 2
• Views: 599
Dec 8th 2014, 10:54 AM
11. Help me with the proof in a tetrahedron - my (wrong) solution attached

• Replies: 0
• Views: 385
Dec 8th 2014, 09:12 AM
12. Help With Hyperbolic Tessellations

• Replies: 1
• Views: 251
Dec 6th 2014, 02:55 PM
13. Isometric graph conversion

• Replies: 1
• Views: 370
Dec 5th 2014, 01:50 AM
14. Need help with this question

• Replies: 4
• Views: 318
Dec 3rd 2014, 08:58 AM

• Replies: 4
• Views: 507
Dec 2nd 2014, 05:16 PM

• Replies: 7
• Views: 748
Dec 2nd 2014, 02:42 PM
17. equilateral triangle;incentre;circumecentre

• Replies: 2
• Views: 842
Nov 28th 2014, 04:40 AM

• Replies: 3
• Views: 341
Nov 27th 2014, 12:36 PM
19. Already its knots okay so I'm also taking some

• Replies: 0
• Views: 296
Nov 25th 2014, 01:27 AM
20. Star-shaped polygons not of the form {n,m}?

• Replies: 3
• Views: 451
Nov 24th 2014, 04:03 AM
21. Angle

• Replies: 1
• Views: 278
Nov 22nd 2014, 03:08 PM
22. Geometric interpretation of complex numbers

• Replies: 2
• Views: 368
Nov 20th 2014, 10:43 AM
23. skin gets revived and looks brilliant

• Replies: 0
• Views: 232
Nov 18th 2014, 09:34 PM

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cosx= .4583?

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