A question about circles and their tangents.
43686
Finding the range of $a$ for which line $y=2x+a$ lies between circles $(x-1)^2+(y-1)^2=1$ and $(x-8)^2+(y-1)^2=4$ without intersecting either
118723
Finding the tangents common to two rotated ellipses?
44159
How can I draw a tangent ending smoothly in a circle?
115737
Tangent and Normal lines that pass through the origin
69472
Trigonometry Ferris Wheel Question
23629
Aligning tangents of graphs
131621
Evaluating a product of tangents
132831
A circle with infinite radius is a line
144901
Tangent to a circle through a point
27089
Find the radius of the inscribed circle of a right triangle.
15596
Identification of each tangent space $T_pV$ with $V$ itself?
85111
Move a rectangle along the tangent of a circle point
12640
Is there a geometrical definition of a tangent line?
152107
Classic Circle and Adjacent Arrangement Problem
83596
A simple proof that a polygon circumscribing a circle overestimates its perimeter
76001
Construct a fourth circle tangent to 3 circles forming a tangency chain
105081
Illustrator: Is there an efficient and accurate way to join two circles by their tangents (and keep it editable)?