Part I: Midsegments
1. If D, E, and F are midpoints of the sides
of AABC, find the perimeter of AABC.
E
16

The perimeter of triangle ABC is 70 units

Step-by-step explanation:

we know that

The Midpoint Theorem states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

so

step 1

Find the length side AB

we have

substitute

step 2

Find the length side BC

we have

substitute

step 3

Find the length side AC

we have

substitute

step 4

Find the perimeter of triangle ABC

substitute values

marco saved more.   he saved $35 more.

step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35