Triangle MNO is dilated by a scale factor of 7 to create triangle M'N'O'.
8The perimeter of triangle MNO is x units.
What is the perimeter in units of triangle M'N'O'?
Responses
A
(7 / 8)x square units
B
(7 / 8)2x square units
C
(1 / 8)2x square units
D
(8 / 7)x square units
The perimeter of a triangle is the sum of the lengths of its sides. When a triangle is dilated by a scale factor of 7, all of its sides are multiplied by 7. Therefore, the perimeter of triangle M'N'O' would also be multiplied by 7.
So the perimeter of triangle M'N'O' is (7/8)(7x) = (49/8)x.
The correct answer is:
A) (7/8)x square units