20 points & brainliest
which statements must be true?
select each correct answer.
mn∥su
on=12su
no=nm
om∥tu
st=2on
the figure shows what appears to be acute triangle s t u. point m is on side s t. single tick marks pass through segments s m and m t. point n is on side t u. double tick marks pass through segments t n and n u. point o is on side u s. triple tick marks pass through segments u o and o s. segments m n, n o, and o m are drawn.