Number three is a parallelogram
Number four is a rhombus
The attributes of each quadrilateral is that it must have four sides
Number seven is true because if you fold a rectangle in half it will be congruent and rectangles always have at least one parallel side
Number eight is false because a square has all equal length sides and a rectangle does not have all equal sides making the two very different
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Answer:
The product of 9 and -7 is -63
Step-by-step explanation:
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Answer:
Step-by-step explanation:
let the side of outer square=2x
then x²+x²=(20√2)²
2x²=800
x²=400
x=√400=20 in
2x=2×20=40 in
area of outer square=40²=1600 in²
area of inner square=(20√2)²=800 in²
area of shaded region A=1600-800=800 in²