It is rectangular?

Size of two of the angles in a triangle are: α=110°, β=40°.

Is it a right triangle?

Result

Solution: Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! Next similar math problems: The size of two internal angles of a triangle ABC are α=6/18π and β=7/18π. Calculate the size of the third angle.
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