00:01
The line of reflection, so first of all, you have two mirror images, and then you want to identify the corresponding point of a, b, c, and a, b, prime, b, c prime.
00:11
So a is at negative 4 and negative 4.
00:23
And b is at the coordinate is negative 1 and negative 1.
00:33
And c coordinate is negative 1.
00:34
And c coordinate is 3 and negative 2.
00:43
Then a prime has a coordinate of negative 6, negative 2.
00:55
B prime has a coordinate of negative 3, 1.
01:02
C prime has a coordinate of negative 4, 5.
01:15
So after we identify each point, let's find the midpoint of the two vertices by using the formula.
01:30
So the midpoint of a and a prime is going to be x1 plus x2 divided by 2 and y1 plus y2 divided by 2.
01:46
So let's plug in the value.
01:49
X1 is negative 4, x2 is negative 6.
01:57
Y1 is negative 4, y2 is negative 2...