10. Developing Proof Supply the missing reasons in this two-column proof. In a plane, if a line is perpendicular to one of two parallel lines,
then it is perpendicular to the other.
Given: k I r, r|| s
Prove: kis
Statements
Reasons
Yk
21
1. kir
2. Z1 is a right angle.
3. mZ1 = 90
4. r | s
5. m2 = m_1
6. m2 = 90
7. Z2 is a right angle.
8. Kis
1. Given
a. ?
b. ?
4. Given
c. ?
d. ?
e. ?
f. ?