Question

what is it called when a transformation is rigid? * 2 points
same size and same shape
same size and different shape
different size and same shape
what is the rule if you reflect a point over x - axis? * 2 points
(x,y) changes to (x,-y)
(x,y) changes to (-x,-y)
(x,y) changes to (-y,x)
(x,y) changes to (-x,y)

Explanation:

A rigid transformation preserves the size and shape of a figure. When reflecting a point over the x - axis, the x - coordinate remains the same and the y - coordinate changes its sign.

Answer:

1. A. Same size and same shape
2. A. (x,y) changes to (x,-y)