What does it mean to "preserve side and angle measure"?

A. Means to change the side measurement only.
B. Means to change the Angle measurement only.
C. Means that the side length and angle measurement stays the same.
D. Means to change both the side and angle measurement.

1 answer

C. Means that the side length and angle measurement stays the same.

In geometry, "preserving side and angle measure" typically refers to a transformation or operation that keeps the size of the sides and the measures of the angles unchanged. This concept is important in various geometric constructions and transformations, like rigid motions (translations, rotations, reflections) where the figures maintain their shape and size.