Triangle DEF is formed by connecting the midpoints of the sides of triangle ABC. What is the perimeter of
triangle ABC?
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18

Step-by-step explanation:

Mathematically, the side lengths of ABC is twice that of DEF

so we have side lengths of ABC as;

2(2) , 2(3) and 2(4)

= 4, 6, 8

The perimeter is thus, the addition of the side lengths

4 + 6 + 8 = 18

hdjd

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet