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

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it