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Lesson Plan: Angle between Two Straight Lines in the Coordinate Plane Mathematics • First Year of Secondary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the measure of an acute angle between two straight lines in the coordinate plane.
Objectives
Students will be able to
- find the angle between two straight lines in the coordinate plane given their slopes, two pairs of points, or equations,
- find the equation of a line given the equation of another line and the angle between them.
Prerequisites
Students should already be familiar with
- finding the slope or direction vector of a line from its (Cartesian, vector, or parametric) equation.
Exclusions
Students will not cover
- finding the angle between lines in space.
