There are many different kinds of quadrilaterals, but all have several things in common: all of them have four sides, are coplanar, have two diagonals, and the sum of their four interior angles equals 360 degrees. This is how they are alike, but what makes them different?
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Answer:
a) x=7
b) x=4
c) x= 1/9
I hope this helps! Do you need more help?
When u add it stays the same but for subtraction u change the sign.
Example: 2- (-5)=7
192 in2
The formula for surface area is 2(lw + wh + hl) = 2(2*8 + 12*8 + 12*2) = 2(16+56+24) = 2(96) = 192
