# Triangle Sum Theorem

## Interior angles add to 180 degrees

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Geometry Triangle Relationships

Use Algebra and The Triangle Sum Theorem
Teacher Contributed
$$m\angle a = 4x + 10$$, $$m\angle b = 5x$$, and $$m\angle c = 8x$$. Solve for $$x$$.
a
b
c
qid: 100165
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