Points a, b, c, and d lie on circle m. line segment bd is a diameter. what is the measure of angle acd?

I’m confused on how to work the pie charts

What is the measure of angle 1? a.28 b.152 c.168 d.64

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?