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19-12-2020
Mathematics

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Eddie1Wan Eddie1Wan

19-12-2020

Step-by-step explanation:

b.

The sum of two opposite interior angles equals one exterior angle

111°=60°+‹G

‹G=111°-60°=51°

c.

We use the same property above

3x+4x+5=68°

7x=68-5

7x=63

x=63/7=9

‹D=4(9)+5

‹D=41°

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