Answer:
download graphing calc, it'll help u sm
Step-by-step explanation:
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I just looked it up and it said it is 180
sum of two angles of triangle are equal to the exterior angle of triangle
Answer:
x-y=7
slope:1
y-int:(0,7)
x+y=3
slope: -1
y-int:(0,3)
hope this helps!!:)
Step-by-step explanation: