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38 votes
38 votes
"quadrilateral ABCD is similar to quadrilateral QRST"
(rs)/(bc) (?)/(dc)

"quadrilateral ABCD is similar to quadrilateral QRST"(rs)/(bc) (?)/(dc)-example-1
User Tim Reynolds
by
2.8k points

1 Answer

28 votes
28 votes

Let's take the ratio of the sides

Using proportion,

5/10 = 4/x

cross-multiply

5x = 40

Divide both-side of the equation by 5

x = 8

User Zamotic
by
3.1k points
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