Yes! A 6-8-10 triangle is similar to a 3-4-5 triangle because it is obtained by multiplying each side of the 3-4-5 triangle by 2! You may also verify it as follows:
Take the ratio of the sides 6 and 3, which would give us 2.
Find the ratio of sides 8 and 4, which would also give us 2.
Calculate the ratio of the final pair of sides (10 and 5), which would also lead us to 2.
Since all 3 pairs of sides are proportional with the same proportionality constant (2), a 3-4-5 triangle will be similar to a 6-8-10 triangle!
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