Please hurry I’m being timed!! The line about which a three-dimensional figure is rotated to obtain an object identical to the original is aan)
A. horizontal plane.
B. plane of symmetry.
C. reflectional axis.
D. axis of symmetry.

gogle said:

The line about which a three-dimensional figure is rotated to obtain an object identical to the original is a(n) horizontal plane.

my discord name is kinglilcliff12#7776

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -