3 years ago

Find the value of x that will allow you to prove that CD below is parallel to EF if the measure of 21 is

Mathematics

1 answer:

irina1246 [14]3 years ago

8 0

Answer:

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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