MATH 213 Study Guide - Midterm Guide: Protractor, Internal And External Angles, Parallelogram
10 Jan 2019
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Consider the diagram of the sun, earth, and moon"s orbit below. Assume the bold line at right represents a mirror and the circle represents an observer, both viewed from above. The dotted line represents the reflected light ray coming from point q on the mirror: draw in the normal at point q. Use your protractor: draw the incoming light ray that is being reflected. Indicate what angles you measured and which are congruent. It is in the shape of a right triangle. A walker begins at point a facing b, walks to b and turns to face c, then walks to c. at c he turns to face a, and walks to a. Show what you measured on the diagram, and give the measure. B: without measuring any additional angles, state the total amount of turning done by the walker. If possible, sketch a figure that fits the description given. Indicate all congruent sides, angles, and right angles as appropriate.
