Exercises: Represent and Describe Transformations

Work through each section in order. Show your reasoning where indicated.

Grade 9·21 problems·~30 min·Common Core Math - HS Geometry·standard·hsg-co-a-2

Work through problems with immediate feedback

Fluency Practice

Apply the given coordinate rule to find image coordinates. Show your computation.

A dilation centered at the origin with scale factor $3$ maps triangle $DEF$ to $D'E'F'$ . Which statement is true about the distances and angles?

All distances are preserved; all angles are preserved. The dilation is a rigid motion.

All distances are tripled; all angles are preserved. The dilation is not a rigid motion.

All distances and all angles are tripled.

All angles are preserved; therefore the dilation is a rigid motion.