There is at least one straight line that can bisect both the perimeter and the area of the curve.
1353
Cutting a sandwich with a crust
48339
A triangle with vertices on the sides of a square, with one at a midpoint, cannot be equilateral
81876
edges with thickness and color
68939
Derivative and vector for start of curve are orthogonal to fixed vector, hence the curve is
115737
Tangent and Normal lines that pass through the origin
132070
A challenge on the parabola
87509
Why is the 'straight line' path across continent so curved?
83948
Non-empty intersection.
34484
Filling only when one curve is below the other
109483
Straight lines - product of slope of perpendicular lines.
44164
Light Travels in straight line even in gravity
121084
Right triangles and tangent lines
134722
Intersection of straight line and circle
156594
boundary points, isolation points, accumulation points.
37432
Make Curve Have A Fill and Border
153331
Bernoulli's principle on a curve ball
5086
Why is the derivative of a circle's area its perimeter (and similarly for spheres)?