Which transformation will always map a parallelogram onto Itself? ОА.
a 90° rotation about its center
OB.
a reflection across one of its diagonals
Ос. .
a 180° rotation about its center
OD
a reflection across a line joining the midpoints of opposite sides

the answer is b

answer: 75°

step-by-step explanation:

∠esk is the supplement of ∠edk, so is 100°. ∠esd = 1/2·arc ed, so is 25°.

since ∠esk = ∠esd + ∠dsk

you have 100° = 25° + ∠dsk . .

fill in known values 75° = ∠dsk . . . . .

subtract 25°

step-by-step explanation:

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)

the answer to this is a. a^2 + b^2 = c^2