biersack98
biersack98
17-07-2016
Mathematics
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what is the measure of angle d
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konrad509
konrad509
17-07-2016
[tex]\angle D =\angle B\\\\ \angle B=\angle A+30\\ \angle A+ \angle B=180\\\\ \angle A+\angle A+30=180\\ 2\angle A=150\\ \angle A=75\\\\ \angle B=75+30=105\\ \boxed{\angle D=105} [/tex]
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