CPM Homework Banner

Determine the value of in the diagram below. Justify your reasoning.

Triangle, with all 3 sides extended into lines. At left bottom vertex, angle above & left of both lines, labeled 150 degrees, At right bottom vertex, angle above & right of both lines, labeled, x, At top vertex, angle left & above both lines, labeled 140 degrees.

Straight angles have a total of .

Every triangle's interior angles also add up to .