How does the presence of angled lines positioned at both ends of a straight line influence
the interpreted length of the straight line?

a. inward-facing angled lines make the straight line appear to be longer than it actually is.

b. outward-facing angled lines make the straight line appear to be longer than it actually is.
c. outward-facing angled lines make the straight line appear to be shorter than it
actually is.
d. angles up to 7 degrees cause the müller-lyer illusion to occur; after that, the angle has
almost no influence.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

we can set up an equation to find the girls' ages. the equation is         28=0.5x-5+x. (comment if you need me to explain how i got this equation.) so, you add x and 0.5x to get 1.5x and add 5 to each side. your new equation is 33=1.5x. now divide both sides of the equation by 1.5 to get 22=x. because x is mary's age, to find jasmine's age we subtract mary's age from 28. we find that mary is 22 years old and jasmine is 6 years old.