Question

Next

Answer 1

Answer:

C. slope = 0.5, length = 1.6 units

Step-by-step explanation:

See the diagram attached.

D is the midpoint of AB and E is the midpoint of AC.

Therefore, DE will be parallel to BC.

Hence, Slope of BC =Slope of DE =0.5. (Answer)

Now, ΔADE and ΔABC are congruent.

{Since BC║DE, then ∠ADE =∠ABC and ∠AED =∠ACB and ∠A is common.}

So, $\frac{AD}{AB} =\frac{AE}{AC}=\frac{DE}{BC} =\frac{1}{2}$

Therefore, DE = $\frac{BC}{2}$ = $\frac{3.2}{2}$ = 1.6 units. (Answer)