Question

Complete each short proof by providing the reason.

Answer 1

Answer:

• B) Substitution Property of Equality

Step-by-step explanation:

According to the given:

• m∠2 + m∠5 = 180° and
• m∠5 = 90°

Substitute m∠5 into the first line to get line 3:

• m∠2 + 90° = 180°

This is option B:

• Substitution Property of Equality

Answer 2

Option C

This is substitution property of inequality

Here given two expressions

• m<2+m<5=180°
• m<5=90°

Substitute m<5 in eq(1)

• m<2+90=180
• m<2=180-90
• m<2=90