Respuesta :

Answer:

D

Step-by-step explanation:

BD is a mid- line segment and is one half the length of AE, that is

BD = 0.5 × 21 = 10.5 → d

BasketballEinstein

Answer:

D. [tex]10,5[/tex]

Step-by-step explanation:

This is what is called the Midsegment Theorem, which states that the relation of a triangle's midpunkt is parallel to the triangle's third side, and the mid-segment length is half the third side length, so you would take half of 21 to arrive at your answer:

[tex]10,5 = \frac{21}{2}[/tex]

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