## Unit 6: Connecting Algebra and Geometry through Coodinates

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### Overview

*Building on their work with the Pythagorean Theorem in the 8th grade to find distances, students use a rectangular coordinate system to verify geometric relationships, including properties of special triangles, quadrilaterals, and slopes of parallel and perpendicular lines.*

**Developed By:** Debbie Seldomridge & Cynthia Burke

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## Pre-Unit Assessment

## Lesson 1

Parallel and Perpendicular Lines on a Coordinate Plane

## Lesson 2

Connecting the Pythagorean Theorem and the Distance Formula Part 1

## Lesson 3

Connecting the Pythagorean Theorem and the Distance Formula Part 2

## Lesson 4

Let’s Prove It!

## Lesson 5

Capstone Performance Task