Polygon P’Q’R’S’T’ shown on the grid below is an image of Polygon PQRST after dilation with a scale factor of 3, keeping the origin as the center of dilation.

http://tinypic.com/r/29vzacx/6

Which statement about corresponding sides and angles of the two polygons is correct?

a)The measures of angle Q and angle Q’ are in the ratio 1:3.

b)The length of side TS is equal to the length of side T’S’.

c)The length of diagonal RT is equal to the length of diagonal R’T’.

d)The lengths of

Question

Polygon P’Q’R’S’T’ shown on the grid below is an image of Polygon PQRST after dilation with a scale factor of 3, keeping the origin as the center of dilation.

http://tinypic.com/r/29vzacx/6

Which statement about corresponding sides and angles of the two polygons is correct?

a)The measures of angle Q and angle Q’ are in the ratio 1:3.

b)The length of side TS is equal to the length of side T’S’.

c)The length of diagonal RT is equal to the length of diagonal R’T’.

d)The lengths of

stephstar101 · Answer

D, whatever it is, is the right answer. 

A is wrong because even though the prime shape (the one with the ' ) is 3x bigger, the angle remains the same.

B is wrong because the 2 TS lengths are not equal

C is wrong because the 2 diagonal lengths RT are also not equal

D is the only possible answer, despite not being complete.