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Lesson: Geometry - 18

Triangle: Perimeter

[Page 18 of 30]

The perimeters of the two triangles are in the same ratio as the sides. Perimeter is the total distance around the outside of a triangle.

The perimeter of a triangle is the sum of its sides.

The perimeter of this triangle is 7 + 10 + 4.5 = 21.5

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