Geometry Forum

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

1. Area of a Triangle

• Replies: 0
• Views: 722
Oct 15th 2010, 05:27 PM
2. Coordinates, vectors and cross products

• Replies: 3
• Views: 867
Oct 15th 2010, 10:20 AM
3. find the radius with bisected chord

• Replies: 1
• Views: 3,086
Oct 15th 2010, 03:25 AM
4. Help with circle geometry!

• Replies: 7
• Views: 582
Oct 14th 2010, 03:46 PM
5. geometry (traingle)

• Replies: 3
• Views: 648
Oct 14th 2010, 07:34 AM
6. Length and area #2

• Replies: 1
• Views: 3,019
Oct 14th 2010, 07:04 AM
7. Length and area #3

• Replies: 2
• Views: 3,475
Oct 14th 2010, 05:43 AM
8. Area - circles and equilateral triangle.

• Replies: 1
• Views: 1,179
Oct 14th 2010, 03:38 AM
9. Pythagoras Puzzle

• Replies: 4
• Views: 466
Oct 14th 2010, 03:28 AM
10. Proving lines are perpendicular

• Replies: 1
• Views: 443
Oct 13th 2010, 08:31 PM
11. 2D plane in 3D space problem

• Replies: 2
• Views: 510
Oct 13th 2010, 02:25 PM
12. Triangle Problem

• Replies: 3
• Views: 857
Oct 13th 2010, 02:15 AM
13. Volume of parallelopiped

• Replies: 1
• Views: 492
Oct 12th 2010, 11:10 AM
14. Finding the circumcentre of a triangle.

• Replies: 6
• Views: 694
Oct 12th 2010, 08:38 AM
15. Perpendicular bisector

• Replies: 2
• Views: 569
Oct 11th 2010, 04:29 PM
16. Affine transformations

• Replies: 0
• Views: 590
Oct 10th 2010, 10:59 AM
17. obtuse triangle help

• Replies: 5
• Views: 840
Oct 10th 2010, 05:04 AM
18. Area of a region

• Replies: 6
• Views: 937
Oct 10th 2010, 12:50 AM
19. The Three Isometries

• Replies: 7
• Views: 756
Oct 9th 2010, 01:04 PM
20. Every quadrilateral has a side such that the other two vertices lie on the same side

• Replies: 0
• Views: 1,210
Oct 9th 2010, 12:40 PM
21. For any quadrilateral the lines containing the diagonals always intersect

• Replies: 0
• Views: 1,321
Oct 9th 2010, 12:28 PM
22. Vectors: simplify equation.

• Replies: 3
• Views: 566
Oct 9th 2010, 11:52 AM
23. Parallelograms affine congruent

• Replies: 0
• Views: 520
Oct 9th 2010, 10:07 AM
24. SAT Geometry Questions

• Replies: 4
• Views: 1,628
Oct 9th 2010, 05:53 AM
25. Eratosthenes: size of the Earth

• Replies: 2
• Views: 893
Oct 9th 2010, 04:10 AM

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cosx= .4583?

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