MATH 213 Study Guide - Midterm Guide: Protractor, Venn Diagram, Internal And External Angles
10 Jan 2019
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Include a rough sketch to support your answer: consider the diagram at right showing the earth, sun rays, and the orbit of the moon (dotted line). Earth sun rays: indicate by drawing a point and labeling it p where a person on earth would be located if they are experiencing sunrise, the bold curved surface below is a mirror. The dotted line is the incoming ray (incident ray), and the solid line is the normal to the curved surface at the point where the ray hits the surface. Use your protractor to measure the relevant angles, marking them clearly on the diagram, and draw the outgoing (reflected) ray: fill in the reasons in the justification below that the interior angles of a quadrilateral sum to 360 . Given: abcd is a quadrilateral with interior angles a, b, c, d, and exterior angles e, f, g, h, as shown. Prove: a + b + c + d = 360 e.
