Clint Proctor is a lead editor with the credit cards and travel rewards team at Forbes Advisor. He has five years of experience in personal finance journalism and has contributed to a variety of ...

Size of an interval on a number line Example: fractions on a number line Each of these shapes have been split into two equal parts. Each part is a half. Half is shaded orange and half is unshaded.

The term "involute" refers to the shape of the teeth: the curves of the teeth are involutes of circles, which are curves that optimize gear performance. Figure 1.1.2: The three marked circles are key ...