Back to Lines are taken to lines, and line segments to line segments of the same length — Problem 2 · Task Set 54

8.G.A.1.a Tutor Intake -- Rigid Motions Preserve Lines and Length

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Grade 8·5 problems·~7 min·Common Core Math - Grade 8·standard·8-g-a-1a

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Procedures

Segment EF has length 4. A dilation centered at the origin with
scale factor 2 is applied to EF, producing segment E'F'. Which
statement is correct?

E'F' is a straight segment of length 8 -- dilation is not a rigid motion

E'F' is a straight segment of length 4 -- dilation is a rigid motion

E'F' is a curve, not a segment

E'F' is a straight segment of length 8 -- dilation is a rigid motion