Marcus is building a robot for robotics club. the robot has 12 legs that are connected to the wheels when marcus opens the robot he realizes there are 1,008 leg parts. how many parts will marcus need to use for each leg so that each leg has the same number of parts? a. 84 b. none of the above c. there are not enough parts for each leg d. 804 e. 83.17

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.