The wood from a chopped tree is often used as firewood. Look at the two stacks of wood shown. Notice that each of these stacks of wood was cut differently. The logs in the stack of wood on top were cut directly across. The stack of wood on the bottom was cut across, and then cut lengthwise, creating even smaller pieces of wood. Notice that because the logs in each stack of wood were cut differently, the shapes of the front of the logs in each stack are different. The two-dimensional shape of the newly exposed section formed by a cut is called a cross-section. In this lesson, you will learn about the cross-sections of three-dimensional figures.
What is the two-dimensional shape of the newly exposed section formed by a cut called?
Answer: Cross-section.