Equations of Parallel & Perpendicular Lines (Day 4)

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Build procedural fluency with determining equations of parallel and perpendicular lines.

Prework

• Make sure you have Chromebooks or some other class set of technology

• Make sure you have a class set of compasses for constructions

Answer Keys

• Link to Answer Keys

Classwork

• Estimation – Track Race

• Warm Up

• Desmos Activity

• Construction Challenge (Lisa Bejarano)

Standards

Common Core

• HSG.GPE.B.5 – Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point).

TEKS

• G.2(B) – derive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of lines

• G.2(C) – determine an equation of a line parallel or perpendicular to a given line that passes through a given point