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'run' is distance x direction changes

'rise' is distance y direction changes

slope='rise'/'run'

for ABC

'run' is 11-3 or 8

'rise' is 10-0=10

slope=10/8=5/4=1.25 (dunno if your program wants fraction or decimal)

for DEF

'run' is 19-15=4

'rise'=20-15=5

slope=5/4=1.25

they are equal because the 2 triangles are similar (congruent means exactly the same but they are different sizes)

i dont know

step-by-step explanation:

here is the

mark brainliest pl