Question

helena concluded:
\its not possible to map qrst onto xyzw using a sequence of rigid transformations, so the quadrilaterals are not congruent.\
what error did helena make in her conclusion?
choose 1 answer:
a one more transformation - a rotation - would map qrst onto xyzw. so the quadrilaterals are congruent.

Explanation:

Rigid transformations include translations, rotations, and reflections. Helena's error was not considering that a rotation (a type of rigid transformation) could map \(QRST\) onto \(XYZW\). If a sequence of rigid transformations (including rotation) can map one figure onto another, the figures are congruent.

Answer:

A. One more transformation — a rotation — would map \(QRST\) onto \(XYZW\). So the quadrilaterals are congruent.