Find the missing side length, when the perimeter is 20

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

for future students the answer is b

hope i

-lavira: )

42.4 6th grade students prefer hip hop

step-by-step explanation:

40 percent of 106 = 42.4