Unit 5, Lesson 9# Determining Perimeter and Area of Polygons on the Coordinate Plane

EngageNY 45 min(s)Support for English Language Learners

Students find the perimeter of irregular figures using coordinates to find the length of a side joining points with the same first coordinate or the same second coordinate. Students find the area enclosed by a polygon on the coordinate plane by composing or decomposing using polygons with known area formulas. The solutions given throughout the lesson only represent some of the correct answers to the problems. Both are correct strategies for determining the area of a rectangle and should be accepted.