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Both have 3 sides

Both have 3 interior acute angles that add up to 180 degrees

Both have 3 exterior angles that add up to 360 degrees

Both will individually tessellate

Both have a perimeter which is the sum of their 3 sides

Both have an area which is 0.5*base*perpendicular height

Both have no diagonals

Both are subjected to the rules of trigonometry

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11y ago

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