Find the measure of the line segment indicated.
assume that lines which appear tangent are tangent.
a) 10
b) 6
c) 14
d) 7

What aspects of lines have to be diffrent

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?