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 ...
Geometry teaches us more than geometry. It supplies us with lessons that are actually indispensable for morality. A triangle is a three-sided two-dimensional figure whose interior angles add up to 180 ...
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