Math Help Forum - Geometry

Math Help Forum - Geometry http://www.mathhelpforum.com/math-help Euclidean, basic geometric proofs, volumes, perimeters, etc. en Fri, 20 Nov 2009 21:55:43 GMT vBulletin 60 http://www.mathhelpforum.com/math-help/images/MHF/misc/rss.jpg Math Help Forum - Geometry http://www.mathhelpforum.com/math-help Area of segments - circle help http://www.mathhelpforum.com/math-help/geometry/115766-area-segments-circle-help.html Fri, 20 Nov 2009 17:56:08 GMT I need some help with a puzzle that has been really bugging me. I can't think of any solutions without getting more information, and I have no idea how to get that information.

You have two identical circles that overlap (like a venn diagram) so that the center point of one circle is on the edge of the other circle. If the overlapping area is exactly 20000 square centimetres, what is the radius of the circles?

Either answers or suggestions on how to reach an answer would be great. I know the information is vague... Hence the fact I can't do it ^^ ]]> Geometry mattyarnold http://www.mathhelpforum.com/math-help/geometry/115766-area-segments-circle-help.html Circular Cone http://www.mathhelpforum.com/math-help/geometry/115748-circular-cone.html Fri, 20 Nov 2009 15:52:28 GMT Consider a right circular cone with the vertex V and O the center of the base. the radius of the base is 1 and the height VO is square root of 35. consider also the diameter AB of the base and C the midpoint of VA. Comput the length of the shortest path, on the surface of the cone from B to C. Consider a right circular cone with the vertex V and O the center of the base. the radius of the base is 1 and the height VO is square root of 35. consider also the diameter AB of the base and C the midpoint of VA. Comput the length of the shortest path, on the surface of the cone from B to C. ]]> Geometry Ilsa http://www.mathhelpforum.com/math-help/geometry/115748-circular-cone.html circle geometry http://www.mathhelpforum.com/math-help/geometry/115747-circle-geometry.html Fri, 20 Nov 2009 15:50:18 GMT In the figure , two circles intersect at P and Q , and AQ is the diameter of circle APQC . THe lines APD , AQB, and DQC are straight . Prove taht \angle ADC=\angle ABC In the figure , two circles intersect at P and Q , and AQ is the diameter of circle APQC . THe lines APD , AQB, and DQC are straight . Prove taht

$\angle ADC=\angle ABC$

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]]> Geometry thereddevils http://www.mathhelpforum.com/math-help/geometry/115747-circle-geometry.html parallelogram http://www.mathhelpforum.com/math-help/geometry/115746-parallelogram.html Fri, 20 Nov 2009 15:46:00 GMT ABCD is a paralleogram . H is the midpoint of BC and K is the midpoint of CD . THe lines AC and HK meet at L . Find the ratios AL:CL ABCD is a paralleogram . H is the midpoint of BC and K is the midpoint of CD . THe lines AC and HK meet at L . Find the ratios AL:CL

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]]> Geometry thereddevils http://www.mathhelpforum.com/math-help/geometry/115746-parallelogram.html isosceles triangel http://www.mathhelpforum.com/math-help/geometry/115744-isosceles-triangel.html Fri, 20 Nov 2009 15:44:31 GMT In the figure , ABC is an isosceles triangle with AB=AC . The side CB is produced to D such that CB=BD . THe side AC is produced to E such that AC=CE . If EB is produced meets AD at X , prove that DX=XB . In the figure , ABC is an isosceles triangle with AB=AC . The side CB is produced to D such that CB=BD . THe side AC is produced to E such that AC=CE . If EB is produced meets AD at X , prove that DX=XB .

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]]> Geometry thereddevils http://www.mathhelpforum.com/math-help/geometry/115744-isosceles-triangel.html Overlapping circles question http://www.mathhelpforum.com/math-help/geometry/115698-overlapping-circles-question.html Fri, 20 Nov 2009 05:32:18 GMT I'm more interested in the method than the answer. Thanks for the help everyone (Rock)

"Suppose you have two identical circles that overlap such that the center point of one circle is on the edge of the other circle. If the overlapping area is exactly 20000 square centimetres, what is the radius of the circles?" ]]> Geometry MrNoose http://www.mathhelpforum.com/math-help/geometry/115698-overlapping-circles-question.html Help please!! http://www.mathhelpforum.com/math-help/geometry/115649-help-please.html Fri, 20 Nov 2009 00:30:59 GMT TRIANGLE DEF has vertices D(4,5) E(-4,3) F(0,-5). Determine a)An equation of EB, the median from E to DF b)an equation of FA, the altitude from f to DE c)an equation of PQ, the right bisector of EF This question doesnt really make sense to me so if u can help me i really appreciate it. :... TRIANGLE DEF has vertices D(4,5) E(-4,3) F(0,-5). Determine
a)An equation of EB, the median from E to DF
b)an equation of FA, the altitude from f to DE
c)an equation of PQ, the right bisector of EF

This question doesnt really make sense to me so if u can help me i really appreciate it. : D
]]> Geometry lovemath123 http://www.mathhelpforum.com/math-help/geometry/115649-help-please.html Aptitude Test coming , Please help ! http://www.mathhelpforum.com/math-help/geometry/115616-aptitude-test-coming-please-help.html Thu, 19 Nov 2009 19:52:13 GMT Hello Guys,
I have an aptitude test next week and I can not solve the attached problems in Aptitude test.doc , Please help me out with their answers and brief explaintion so i can understand the solution.

Please don't share any answers that you are not sure of !

thanks alot

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]]> Geometry sous http://www.mathhelpforum.com/math-help/geometry/115616-aptitude-test-coming-please-help.html Prove http://www.mathhelpforum.com/math-help/geometry/115598-prove.html Thu, 19 Nov 2009 17:43:21 GMT Prove analytically the the diagonals of a rectangle are equal. I really have no idea. Please help. Thanks! Prove analytically the the diagonals of a rectangle are equal.

I really have no idea. Please help. Thanks! ]]> Geometry reiward http://www.mathhelpforum.com/math-help/geometry/115598-prove.html Vertices http://www.mathhelpforum.com/math-help/geometry/115597-vertices.html Thu, 19 Nov 2009 17:42:14 GMT Determine the vertices of a triangle who sides have midpoints at (1,0) , (2,-1) and (3,1) I really have no idea. Please help. Thanks! Determine the vertices of a triangle who sides have midpoints at (1,0) , (2,-1) and (3,1)

I really have no idea. Please help. Thanks! ]]> Geometry reiward http://www.mathhelpforum.com/math-help/geometry/115597-vertices.html Express algebraically http://www.mathhelpforum.com/math-help/geometry/115592-express-algebraically.html Thu, 19 Nov 2009 17:40:44 GMT Express each of the following algebraically: a. a vertical line 2 units to the left of the y-axis b. a line parallel to the x-axis and contains the point (3,5) c. a set of points where the abscissa is always twice the ordinate. d. the set of pints in the fourth quadrant help please, thanks! Express each of the following algebraically:

a. a vertical line 2 units to the left of the y-axis
b. a line parallel to the x-axis and contains the point (3,5)
c. a set of points where the abscissa is always twice the ordinate.
d. the set of pints in the fourth quadrant

help please, thanks! ]]> Geometry reiward http://www.mathhelpforum.com/math-help/geometry/115592-express-algebraically.html parallel lines http://www.mathhelpforum.com/math-help/geometry/115565-parallel-lines.html Thu, 19 Nov 2009 14:34:46 GMT In the figure , JG bisects \angle DGH , the line FG is parallel EK , and KJ is parallel to GH . Prove that EJ is parallel to FH In the figure , JG bisects $\angle DGH$ , the line FG is parallel EK , and KJ is parallel to GH . Prove that EJ is parallel to FH

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]]> Geometry thereddevils http://www.mathhelpforum.com/math-help/geometry/115565-parallel-lines.html Radian question http://www.mathhelpforum.com/math-help/geometry/115547-radian-question.html Thu, 19 Nov 2009 10:41:54 GMT A flat belt is wrapped around two pulleys of diameter 10cm and 16cm seperated by a distance of 26cm as shown below. Find the exact length of the belt. Thanks guys. Image: http://img5.imageshack.us/img5/6594/54188893.jpg A flat belt is wrapped around two pulleys of diameter 10cm and 16cm seperated by a distance of 26cm as shown below.
Find the exact length of the belt.

Thanks guys.

]]> Geometry deltaxray http://www.mathhelpforum.com/math-help/geometry/115547-radian-question.html Perimeter of oval http://www.mathhelpforum.com/math-help/geometry/115408-perimeter-oval.html Wed, 18 Nov 2009 20:34:44 GMT Is there a way to calculate the perimeter of an oval with min. diameter 9 cm, and max. diameter 20 cm? Is there a way to calculate the perimeter of an oval with min. diameter 9 cm, and max. diameter 20 cm? ]]> Geometry DarkLightA http://www.mathhelpforum.com/math-help/geometry/115408-perimeter-oval.html triangles http://www.mathhelpforum.com/math-help/geometry/115357-triangles.html Wed, 18 Nov 2009 14:43:45 GMT In the figure , AFD and BFE are straight lines and AB is parallel to ED . THe point C is such that AB=AC and FC bisects \angle ACD . Prove that DC=DE In the figure , AFD and BFE are straight lines and AB is parallel to ED . THe point C is such that AB=AC and FC bisects $\angle ACD$ . Prove that DC=DE

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]]> Geometry thereddevils http://www.mathhelpforum.com/math-help/geometry/115357-triangles.html