The coordinates g(7, 3), h(9, 0), i(5, -1) form what type of polygon? an obtuse triangle an acute triangle an equilateral triangle a right triangle

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.