How do you solve for m in the triangle below

since it is an isosceles triangle(a triangle that has 2 angles the exact same) you would make n the same length as 8 then use the Pythagorean therom and solve. the answer is the square root of 128

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option