It is better to use a divider than a ruler, because the thickness of the ruler may cause difficulties in reading off her length. However, divider gives up the accurate measurement.
Angle | Measure | Type |
---|---|---|
\(∠AOB\) | ||
\(∠AOC\) | ||
\(∠BOC\) | ||
\(∠DOC \) | ||
\(∠DOA\) | ||
\(∠DOB\) |