Mathematics
Grade9
Easy
Question
The ratio of perimeter similar to triangles is equal to
- Scale factor
- Square of corresponding sides
- Ratio of corresponding angles
- Equal to the length of sides
Hint:
if two triangles are similar, then their corresponding angles are congruent and corresponding sides are in equal proportion (= scale factor) .
The correct answer is: Scale factor
The side lengths of second second triangle can be written as scale factor x (corresponding side lengths of first triangle).
Adding summation on both side gives perimeter of second triangle = scale factor x (perimeter of first triangle)
Therefore, Ratio of the perimeter of similar triangles is equal to the scale factor.
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