Properties of a parallelogram Topic: Properties of a parallelogramGrade Level: 10 th AIM: What are the properties of a parallelogram?OBJECTIVES: By the end of the lesson, the students should be able to1.Define parallelogram. 2.State the following properties of a parallelogram: a . opposite sides of a parallelogram are congruent b . opposite angles of a parallelogram are congruent c . consecutive angles of a parallelogram are supplementary d . the diagonals of a parallelogram bisect each other 3.Prove that a diagonal divides a parallelogram into two congruent triangles.4.Apply the properties of a parallelogram in numerical and algebraic problems.PRIOR KNOWLEDGE: • Knowledge of parallel lines and of the angles formed when two parallel lines are cut by a transversal. • Past learned method of proving triangles congruent – ASAMATERIALS/EQUIPMENT:-Projector,Transparencies,-laptop computer with Geometer’s Sketchpad (GSP) SoftwareMOTIVATION: Picture will be presented as a power point slide.-The picture shows the tiling of a floor. What geometricfigures were used to tile the floor?
