and the other two angles in a different colour. Image caption, STEP 3: The given angle here in green is 80°. The angles on a straight line always add up to 180°, so the purple angle next to it ...

Interior angles in a triangle add up to 180˚. Triangles close triangleA polygon with three straight sides. have three sides, therefore they have three angles. Interior angles in a triangle sum to ...

This example occurs when two parallel lines are intersected by a third straight line. With both parallel lines cut, the adjacent angles and corresponding sides will share the same shape created by ...