Answer:
In a triangle, the segment joining the midpoints of any two sides will be parallel to the third side and half its length ⇒DE is parallel to AC, and DE = 8, AC=16.
Similarly, DF is parallel to BC, and DF=6, BC=12
Step-by-step explanation:
Similarly, EF is parallel to AB, and EF=3.5, AB=7
Hence, perimeter of ΔDEF = 8+6+3.5 = 17.5
to get the mean you need to add up all the numbers
46+52+51+54+49+51+61=364
then divide that sum by the amount of numbers you have
364 divided by 7=52
so the mean you have is 52 degrees
93
B is your answer to this problem
the answer is 12 inches
there is 1 foot per 12 inches
or
12 inches make a foot
