Lesson Plan: Lesson plans were written by Maryland mathematics educators and could be used when teaching the concepts.
 Goal 2 Geometry, Measurement, And Reasoning Expectation 2.1 The student will represent and analyze two- and three-dimensional figures using tools and technology when appropriate. Indicator 2.1.2 The student will identify and/or verify properties of geometric figures using the coordinate plane and concepts from algebra.

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Application of Properties of Quadrilaterals in the Coordinate Plane
Approximate Time: One to two 45-minute lessons depending on the level of student you are working with. This is an excellent way to have students practice BCR's-for all levels of students.
Objective: Students will be able to apply definitions and theorems to verify special quadrilaterals using coordinate geometry.

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Rectangles and Trapezoids in the Coordinate Plane
Approximate Time: One 45-minute lesson
Objective: Students will be able to find the coordinates of the vertices of special quadrilaterals placed in the coordinate plane.

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Squares and Parallelograms in the Coordinate Plane
Approximate Time: One 45-minute lesson (Other quadrilaterals may be done as you study them.)
Objective: Students will be able to find the coordinates of the vertices of special quadrilaterals placed in the coordinate plane.

### Lesson Plan

The Pythagorean Theorem, the Distance Formula, and Slope
Approximate Time: 45-minute lesson plus 10 minutes in a subsequent lesson.
Objective: For the students to understand the connection between the Pythagorean Theorem, the distance formula, and slope.
 Resources for 2.1.2: Skill Statements | Public Release Items | LESSON PLANS |