Question

problem 11: (first taught in lesson 13) from this given statement, select the definition, property, postulate, or theorem that justifies the prove statement. given: m∠1 = m∠3 and m∠2 = m∠4 prove: m∠1 + m∠2 = m∠3 + m∠4 after you pick your answer press go. a b c d e addition property

Explanation:

Step1: Recall addition property

If \(a = b\) and \(c = d\), then \(a + c=b + d\).

Step2: Apply to angle measures

Here \(a = m\angle1\), \(b = m\angle3\), \(c = m\angle2\), \(d = m\angle4\). Given \(m\angle1 = m\angle3\) and \(m\angle2 = m\angle4\), by addition - property \(m\angle1 + m\angle2=m\angle3 + m\angle4\).

Answer:

A. Addition Property