Answers to Pre Assessment
Posts
Polygon and Angles Reflection
*Important vocabulary is underlined What are the common properties of all polygons? Some facts that all polygons share are: 1. All polygons have to be a closed shape. 2. A polygon must have straight sides i.e. no curved sides. 3. Polygons can't have any intersecting lines, but they must have 3 or more sides. 4. All of the polygon's sides must meet at vertices (corners) , which form angles. ••• What does the measure in degrees tell you about an angle? What are some common benchmark angles? The amount of turn between two straight lines that have a common endpoint or vertex is called an angle . From the measure of degrees, we learn how far the moving arm (called the terminal side/arm ) is from the starting arm (called the initial side/arm ). In this example: I can see that the terminal side has moved 20 ° from the initial side. This creates a 20° angle. Common benchmark angles are usually multiples of either 45 ° or 30°. The most common b...
