Line segment ef is shown on a coordinate grid: the line segment is rotated 180 degrees counterclockwise about the origin to form e'f'. which statement describes e'f'? a e'f' is perpendicular to ef. b e'f' and ef are equal in length. c e'f' is half the length of ef. d e'f' is greater than twice the length of ef.

B. E'F' and EF are equal in length.

Step-by-step explanation:

The rotation has two main properties:-

1. Rotations preserve size ( includes sides and angles).

2. Lines connecting the center of rotation to the pre-image and the corresponding point on the image have equal length.

Given : The line segment is rotated 180 degrees counterclockwise about the origin to form E'F'.

Then, E'F' and EF are equal in length. ( by property 1.)

i think 1: 2

step-by-step explanation:

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.