Question

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

Answer 1

`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)`