Answer:
If corresponding vertices on an image and a preimage are connected with line segments, the line segments are divided equally by the line of reflection. That is, the perpendicular distance from the line of reflection to either of the corresponding vertices is the same. Line is a perpendicular bisector of the connecting line segments.
Step-by-step explanation:
First find out the triangle (red) in the top left.

The area of a triangle is found by length times width and divide it all by 2 because a triangle is half of a square. Now we multiply that by 2 for the second triangle (in green) at the bottom. We can do this because the blue does to the half way mark on the quilt so the other triangle on the bottom has to be the same.

Now we find out the area of the whole SQUARE quilt. It already gave the measurement of one side so they all have to be the same.

Now we only need the area of the side the blue is on. So divide by 2 and get 72.
Now subtract 18 from 72.
The answer is 54 for blue.
Answer:
maybe 8
Step-by-step explanation:
BRAINLIEST PLEASE!!!!!!!
Answer:
x=16
Step-by-step explanation:
this is the good ol' a^2 + b^2 = c^2
c is always the longest line, in this case 20.
so now you have 12^2 + b^2 =20^2 or 144+b^2=400.
subtract 144 from each side. B^2=256.
then you square root each side and you are left with b=16 and in this case B=X