It is true.
1 cm is equivalent to 10 mm.
So 7.14 cm = 7.14 x 10 mm = 71.4 mm.
True
true
True.
False.
false
true
True
True.
False
False...an equilateral triangle has 3 equal sides.
Multiply the cross products, and see if they are equal. If they are equal, the proportion is true. If they are unequal, the proportion is false.
True when they are in the form of rectangles.