Answer:
or 
Step-by-step explanation:
Since a square's sides are all equal to each other you can use this formula for finding the area of a rectangle which is Base x Height or since all the sides are equal to each other you can just square the one side to get the desired answer!
Answer:
x=2
Step-by-step explanation:
Hope it helps you!
13-9 = 4
4-4 = 0
0 divided by 2 = 0
2x = 0
x = 0
I don't know if my answer is completely correct, but I think it's 100. All triangles add up to 180, and an isosceles triangle has 2 equal sides. 40 would be the 2 sides, and 180 subtracted from 80 equals 100.
