Geometry and Trig

Ask your questions about all levels of geometry from elementary school through college.
R
Determining if two lines in R3 Intersect
Replies
9
Views
2K
pka
pka
A
Two Concentric Sectors
Replies
9
Views
2K
Cubist
Cubist
H
Two Quarter Circles in a Square, find the area of the region - any help would be appreciated, ty!
Replies
10
Views
2K
hoosie
H
L
Geometry proof: is it enough?
Replies
3
Views
600
Levido
L
S
Double Angle Formulae
Replies
5
Views
695
HallsofIvy
H
D
Showing bubbles on a map
Replies
5
Views
780
Daz
D
D
Finding area
Replies
9
Views
884
DavidE
D
N
How many marbles are in a jar?
Replies
2
Views
10K
Nick C
N
S
T formulae Q
Replies
6
Views
628
pka
pka
R
triangle similarity
Replies
14
Views
1K
rachelmaddie
R
R
Congruent triangles
Replies
13
Views
926
Harry_the_cat
Harry_the_cat
R
Slopes of parallel and perpendicular lines
Replies
11
Views
961
Harry_the_cat
Harry_the_cat
R
Point and a line
2 3 4
Replies
65
Views
4K
Harry_the_cat
Harry_the_cat
nothing
Toroidal Geometry
Replies
1
Views
455
firemath
firemath
M
Unknown Circle with two given Tangents and a given radius
Replies
5
Views
683
Cubist
Cubist
M
Write a circle equation
Replies
7
Views
688
Dr.Peterson
Dr.Peterson
R
Geometry help
2
Replies
38
Views
2K
rachelmaddie
R
L
Continuous line from edges of a 3D object
Replies
11
Views
903
markraz
markraz
G
compute arcsin angle , but with a 3th dimension
Replies
2
Views
456
Dr.Peterson
Dr.Peterson
B
Find distance during acceleration
Replies
5
Views
1K
Steven G
Steven G
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