Properties of Parallel Lines Period: Date: State the postulate or theorem that allows you to conclude that allb. 1. Given: a 1 c, b Ic 3. Given: a ll c, b ll c 2. Given: 41 = 42 X Explain how you would show that allb. State any postulates or theorems that you would use. 4. 5 6. 42 143- 370 - b 7. Complete the two-column proof of Theorem3. 12. Given: m 1 e,n le Prove: m IIn Statements Reasons 1. mle, all 1. Given m 2. Ll is art. L. 2. Rent Parenhauler 3. /2 is art. Z. 3. Decade Paceandicular 4. 41 = 22 4. All Right angle are sengrant 5. m n 8. When constructing parallel lines, you are essentially doing the following: a. Copying a line segment b. Copying an arc c. Copying a point d. Copying an angle