Answer:
9
Explanation:
Find x if these two
triangles are similar.
Similar triangles are triangles that have the same shape, but their sizes may vary, their corresponding angles are congruent and corresponding sides are in equal proportion.
we can solve with an equation
81 : 27 = 27 : x
x = 27 * 27 : 81
x = 9
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check
81 : 27 = 27 : 9
3 = 3
the answer is good