PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!! GEOMTREY

asked Nov 21, 2023 110k views

7 votes

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12 votes

Answer:

$m\angle{ABC}=144^(\circ)$

Explanation:

By using Angle Addition Postulate, it holds:

$m\angle{ABD}+m\angle{DBC}=m\angle{ABC}$

Substitute
$m\angle{ABD}=76^(\circ)$ and
$m\angle{DBC}=68^(\circ)$ into the equation:

$76^(\circ)+68^(\circ)=m\angle{ABC}$

Add the measures:

$m\angle{ABC}=144^(\circ)$

Fantastory answered Nov 25, 2023

7.9k points

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