Question

6. A parallelogram is dilated by a scale factor of three. Which of the following properties are unchanged? I. the perimeter and area II. the measure of the angles III. the lengths of the sides I, II, and III II and III II III

Answer 1

The perimeter would be tripled, and the area would be multiplied by 3^2, which is 9, so option (i) is incorrect.
The angles would be unchanged, so option (ii) is correct
The lengths of the sides would be multiplied by 3, so option (iii) is incorrect

Only correct response is option (ii)

Answer 2

Answer:

II. the measure of the angles remains unchanged.

Step-by-step explanation:

A parallelogram is dilated by a scale factor of three.

The property that remains unchanged is option II.the measure of the angles  

When we are changing the size of the parallelogram, we are only changing the sides and not the angles. So, the perimeter, the area and the lengths of the sides will change but not the angles.