The rectangle was rotated 360° around its center, point c
vertex d traces the path of a circle and lands back upon
itself.
which best explains why the rotation represents an
isometric transformation?
o the angle at point d remained a right angle.
the rectangle did not change shape or size.
o point c remained the center of the rectangle.
point c did not remain the center of the rectangle.
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check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

c

step-by-step explanation:

at least i think its

1; 35 is the ratio

step-by-step explanation: