Polygon Names
Polygons are named by how many sides they have: three is a triangle, four a quadrilateral, five a pentagon, six a hexagon, eight an octagon, and ten a decagon. A regular polygon has all sides and all angles equal. Polygon Names, Example 2: This shape is a (3)-sided polygon so it is a triangle. Exercises for […]
Measurements – Time
Time is measured in units that do not scale by ten: 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day. That is why time arithmetic needs its own conversions rather than decimal ones. The examples below work through reading, converting, and calculating elapsed time.
