How to find the perimeter of an acute / obtuse triangle

Practice Questions

ACT Math › How to find the perimeter of an acute / obtuse triangle

Questions
5
1

Two similiar triangles exist where the ratio of perimeters is 4:5 for the smaller to the larger triangle. If the larger triangle has sides of 6, 7, and 12 inches, what is the perimeter, in inches, of the smaller triangle?

2

There are two similar triangles. Their perimeters are in a ratio of . If the perimeter of the smaller triangle is , what is the perimeter of the larger triangle?

3

Two similar triangles' perimeters are in a ratio of . If the lengths of the larger triangle's sides are , , and , what is the perimeter of the smaller triangle?

4

Two similiar triangles have a ratio of perimeters of 7:2.

If the smaller triangle has sides of 3, 7, and 5, what is the perimeter of the larger triangle.

5

Two similar triangles have perimeteres in the ratio . The sides of the smaller triangle measure , , and respectively. What is the perimeter, in meters, of the larger triangle?

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