Acompany is manufacturing a gear in the shape of a regular polygon. the measure of each angle of the gear is 162º. how many sides does the gear have? 19 18 20 21

Solve the inequality and graph 6j - 7 < 5

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.