Prove: mA = m2C
Statement:
1. A, B, and C are
supplementary
Reason:
1. Given
2. mzA+m2B + m2C = 180° 2. Definition of
3. mA = 48°
supplementary
3. Given
4. m2B
84°
5. 48°
84° + mC = 180°
6. 132°
mC = 180°
7. mC = 48°
8. mAm C
4. Given
5.[ ? ]
6. Arithmetic
7. [
]
8. Substitution
Select the reason that best
supports Statement 5 in the
given proof.
Distributive Property
Reflexive Property
Substitution
Subtraction Property of Equality