Angles can rotate through 360 degrees, around the line {bisector, cone} dividing angle in half, to make solid figure {cone, geometry}. Cones have base, bisector axis, vertex, and vertex angle. Cone lines {element, cone} can go through vertex. Right-circular-cone area is bottom area plus side area: pi * r^2 + pi * r * (r^2 + h^2)^0.5, where r is base radius and h is height. Right-circular-cone volume = (pi * h * r^2) / 3, where r is radius and h is height.
Mathematical Sciences>Geometry>Solid>Cone
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Date Modified: 2022.0224