Find the value of x that will allow you to prove that CD below is parallel to EF if the measure of 21 is
1 answer:
Answer:
23
Step-by-step explanation:
According to the diagram, two sum of <1 and <2 is 180 degrees
Hence 3x+30+81 = 180
3x+111 = 180
3x =180-111
3x = 69
x = 69/3
x = 23
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Step-by-step explanation:
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