# Locus of Points with Constant Angle

Locus of Points with Constant Angle

This Demonstration plots the points for which line segments drawn from two fixed points on the axis have angle . The locus consists of the arcs of two circles, with centers that move along the axis as you vary . For , the arcs are semicircles and the locus is a circle.

x

θ

y

θ

θ=90°