Flashcards

Compositions of Reflections

Trisha G. Geometry A Honors High School Diploma English 5 cards

Cards in this deck (5)

1Theorem 9-1A translation or rotation is a composition of two reflections.
2Theorem 9-2A composition of reflections across two parallel lines is a translation.
A composition of reflections across two intersecting lines is a rotation.
3Fundamental Theorem of IsometriesIn a plane, one of two congruent figures can be mapped onto the other by a composition of at most three reflections.
4Glide reflectionThe composition of a translation (a glide) and a reflection across a line parallel to the direction of translation.
5Isometry Classification TheoremIn Translations and Rotations, orientations are the same.
In Reflections and Glide Reflections, orientations are opposite.