If m∠A + m∠B = 88° and m∠A + m∠B + m∠C = 150°, which property of equality will you use in the first step to find m∠C? Question 3 options: Transitive Property of Equality Reflexive Property of Equality Symmetric Property of Equality Substitution Property of Equality

Substitution Property of Equality

Step-by-step explanation:

The substitution property of equality states that if x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation.

In this case, m∠A + m∠B in the second equation is substituted by 88°, from the first equation. This allows as to find m∠C as follows:

88° + m∠C = 150°

m∠C = 150° - 88° = 62°

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step-by-step explanation: