Which of the following statements about using a protractor are correct?

the protractor measures angles up to 90°.
the vertex of the angle must be at the 0° mark.
one ray of the angle must point at 0°.
the protractor measures angles that open from left or from the right.

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .