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Triangle Similarity – Missing Side
Triangles ABC and DEF are similar. Work out the side marked with a question mark.
△ ABC
a = 3 b = 4 c = 5
~
△ DEF
d = 6 e = 8 f = ?
Matching sides: a – d, b – e, c – f.
f =
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What is the Missing Side Generator?
This generator presents two similar triangles with one side missing. Your task is to calculate it using the similarity ratio.
How to use
First determine the similarity ratio from known sides, then calculate the missing side.