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04-12-2020
Mathematics

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HELP ASAP!!!!!!!!!!!!!
The measure of ∠DAB equals 110º. The measure of ∠ACB equals 20º.

What is m∠ABC?

Enter your answer in the box.

HELP ASAPThe measure of DAB equals 110º The measure of ACB equals 20ºWhat is mABCEnter your answer in the box class=

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04-12-2020

Answer:

∠ABC=90°

Step-by-step explanation:

if ∠DAB =110 then ∠BAC =180-110 =70° because straighht lines make 180°∠s

use the fact that the sum of angles in a Δ is 180°

∠ABC= 180-20-70= 90

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