What cross-section do you get when you cut a candle vertically?
A.Circle
B.Triangle
C.Rectangle
D.Square

Hint: Cross section is the intersection of a given object, by a plane along its axis. A cross section is a non-empty intersection of a solid body by a plane. There are two main sections in geometry: a Horizontal cross section and a vertical cross section.

Complete step-by-step answer:
The horizontal cross section is a parallel cross section when the plane cuts the solid shape in the horizontal direction it creates a parallel line with the base whereas in vertical cross section a plane cuts the solid shape in the vertical direction which is perpendicular to the base of the shape.
We know a candle is a cylindrical shape object having a circular cross section with some height.
The vertical cross section is obtained when the solid shape is cut in the vertical direction, which is perpendicular to the base.
We will cut the candle which is cylindrical in shape in the vertical direction perpendicular to is base as shown in the figure below

Now when we see this shape from the side angle, it will look like a Rectangle

So, the correct answer is “Option C”.

Note: Students must note that a solid shape can produce different shapes depending on the way it is cut, in case of the cylinder it produces a circle when it is cut in the horizontal axis and a rectangle when it is cut in the vertical axis.