Lesson Plan: Properties of Parallelograms Mathematics
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to determine whether a quadrilateral is a parallelogram and use the properties of parallelograms to find unknown angles or lengths.
Students will be able to
- recognize the following properties of a parallelogram,
- opposite sides are parallel,
- opposite sides are equal in length,
- opposite angles are equal in measure,
- the sum of two adjacent angles is ,
- the diagonals bisect each other,
- identify the following special cases of a parallelogram,
- classify quadrilaterals,
- use the properties of quadrilaterals to find missing lengths and angles in geometric figures.
Students should already be familiar with
- properties of rectangles and squares,
- using geometric notation for line segments, line lengths, angles, and angle measures,
- parallel and perpendicular lines.
Students will not cover
- finding angles (other than right angles) formed by intersecting diagonals (e.g., finding the angle formed by the diagonals of a rectangle).