Mathematics, 21.06.2020 19:57 Haywood82

What is m∠ABC? Justify your reasoning. Using the addition property of equality, 40 + 15 = 55, so m∠ABC = 55°. Using the subtraction property of equality, 40 − 15 = 25, so m∠ABC = 25°. Using the Angle Addition Postulate, 15 + m∠ABC = 40. So, m∠ABC = 25° using the subtraction property of equality. Using the Angle Addition Postulate, 15 + 40 = m∠ABC. So, m∠ABC = 55° after simplifying.

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What is m∠ABC? Justify your reasoning. Using the addition property of equality, 40 + 15 = 55, so m∠A...