In δabc, m∠abc = 40°, bl is the angle bisector of ∠b with point l∈ ac . point m ∈ ab so that lm ⊥ ab and n ∈ bc so that ln ⊥ bc find the angle measures in δabc if m∠cln = 3m∠alm and prove that cn = 1 /2 cl.

4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3