Two angles of a triangle are 40^(circ) a...

Two angles of a triangle are `40^(circ)` and `60^(circ) .` Calculate all its outer angles.

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Third anglè of the triangle `` beginaligned =180^(circ)-(60^(circ)+40^(circ)) =180^(circ)-100^(circ) =80^(circ) endaligned `` ...

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