A triangle is a polygon. It is a closed 3-sided shape made up of straight lines. The ‘tri-’ part of the word triangle means three. A triangle has 3 sides and 3 angles. Interior angles are the angles ...
Image courtesy of McGraw Hill. Imagine learning how to determine the slope of a right triangle by sending your own tiny skier down ski trails or by setting up skateboard ramps for a virtual skater to ...
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