What is the first step in the construction of a line perpendicular to `stackrel(harr)(ab)` and passing through an external point m? assume that the construction uses only a compass and a straightedge.

take your compass on a point on your line. then draw a circle. take the 2 points in which the circle hit the line and draw 2 circles larger than half the distance between he 2 points. take the point that they intersect and and connect it to the line and you point M and it is purpendicular. does that make sense?

.95

step-by-step explanation:

10 - 8 = -2

  8 - 6 = -2

etc, so -2 is the common difference

step-by-step explanation: