Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
shahar
Geometric Q w/ Lack of Data: "AB is hypotenuse of ABC, also biggest side of some..."
Replies
6
Views
2K
Dr.Peterson
Dr.Peterson
S
Please Help to find total length of thick line around overlaid rectangles
Replies
8
Views
4K
Sundari
S
B
Differential geometry
Replies
0
Views
786
Black vegetable
B
Y
If vertices of ?ABC are A(-5,0), B(5,0) and C(0,8), what is area?
Replies
5
Views
3K
Steven G
Steven G
E
Urgent help needed: |a|^2 = (a_1; a_2; a_3)^2 = a_1^2 + a_2^2 + a_3^2
Replies
2
Views
891
pka
pka
shahar
inner angle: If alpha is 90 degree, ABCD is trapezoid, AB=CD. What poly do I get?
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5
Views
1K
shahar
shahar
shahar
Prove polygon w/ n sides has n vertices; w/ n vertices has n sides
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6
Views
1K
HallsofIvy
H
A
Trapezoid: ABCD is a trapezoid whose diagonals AC and BD intersect at point E.
Replies
14
Views
5K
Steven G
Steven G
L
Locus: Given pts a=(5,-3), b=(1,4), find locus of c such that area of triangle abc=10
Replies
9
Views
2K
Locus
L
J
Simpsons formula and the volume of a pyramid frustum
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1
Views
1K
Dr.Peterson
Dr.Peterson
S
trigonometric equations: How to solve tan(x) - sin(x) = 5\12 ?
Replies
1
Views
1K
tkhunny
tkhunny
V
This one has me stumped - entrance exam for junior high school in Japan
Replies
16
Views
3K
vancouverron
V
O
Resultant vector by triangle method
Replies
1
Views
1K
Deleted member 4993
D
E
Structures: "List the topics covered in structures maths lessons..."
Replies
7
Views
1K
Empsie
E
W
Need help with 4th edge of perimeter
Replies
4
Views
1K
Harry_the_cat
Harry_the_cat
E
Need help pls!!! (19 questions/parts related to polygons, circles, etc)
Replies
16
Views
2K
Steven G
Steven G
N
Find sides of rectangle, given sides, angles, etc for quadrilateral inside rectangle
Replies
6
Views
1K
Dr.Peterson
Dr.Peterson
T
Whole Number Interior and Lengths Triangle - Does It Exist?
Replies
5
Views
2K
jtayag0622
J
T
Maths Angle: A surveyor measures the angle of elevation as 19 degrees....
Replies
2
Views
5K
HallsofIvy
H
T
Direction and speed control for effect sprites on a screen
Replies
1
Views
827
lev888
lev888
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