What is the measure of L ABD?

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asked Sep 20, 2020 201k views

4 votes

What is the measure of L ABD?

Mathematics
middle-school

Manukall asked

by Manukall

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1 Answer

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Answer:

$\large\boxed{39^o}$

Explanation:

$m\angle ABC=90^o\\\\m\angle ABC=m\angle ABD+m\angle DBC\\\\m\angle DBC=51^o\\\\\text{Substitute:}\\\\m\angle ABD+51^o=90^o\qquad\text{subtract }\ 51^o\ \text{from both sides}\\\\m\angle ABD=39^o$

Frastel answered Sep 26, 2020

by Frastel

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