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Lilit [14]
3 years ago
10

What proportional segment lengths verify that BC¯¯¯¯¯∥DE¯¯¯¯¯ ? Fill in the boxes to correctly complete the proportion. $$ = $$

A triangle with vertices labeled as A, B, C. Side B C is base. Sides A B and A C contain midpoints D and E, respectively. A line segment is drawn from D to E. Side A D is labeled as 4. Side D B is labeled as 6. Side A E is labeled as 3.2. Side E C is labeled as 4.8.

Mathematics
2 answers:
Alborosie3 years ago
5 0

answer is

4/6 then 3.2

took the test

ivanzaharov [21]3 years ago
5 0

Answer:

\frac{4}{10}=\frac{3.2}{8.0}

Step-by-step explanation:

Given,

ABC is a triangle,

In which, AD = 4 unit, DB = 6 unit, AE = 3.2 unit and EC = 4.8 unit,

⇒  \frac{AD}{AB}=\frac{4}{4+6}=\frac{4}{10}=0.4

\frac{AE}{EC}=\frac{3.2}{3.2+4.8}=\frac{3.2}{8}=0.4

\implies \frac{AD}{AB}=\frac{AE}{EC}

⇒ Δ ADE  ≅  Δ ABC  

⇒ ∠ADE ≅ ∠ABC  and ∠AED ≅ ∠ACB

By the converse of alternate interior angle theorem.

BC ║ DE

Hence, the required proportion of segment is,

\frac{4}{10}=\frac{3.2}{8.0}

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