I'm just writing Ill leave that one to you. If both pairs of opposite sides of a quadrilateral are congruent, then its a parallelogram (converse of a property). That resolution from confusion to clarity is, for me, one of the greatest joys of doing math. by side-angle-side congruency, by SAS congruent triangles. So we know that this triangle up here, as well. What are the ways to tell that the quadrilateral on Image 9 is a parallelogram? So far, this lesson presented what makes a quadrilateral a parallelogram. AC is a diagonal. Math Labs with Activity - Verify that the Quadrilateral Formed by Joining the Midpoints OBJECTIVE To verify that the quadrilateral formed by joining the midpoints of the sides of a quadrilateral is a parallelogram Materials Required A sheet of white paper A sheet of glazed paper A geometry box A pair of scissors Procedure Step [] Show that both pairs of opposite sides are parallel To prove the first result, we constructed in each case a diagonal that lies completely inside the quadrilateral. Discovering Geometry An Investigative Approach: Online Help, Common Core Math - Geometry: High School Standards, Common Core Math - Functions: High School Standards, NY Regents Exam - Geometry: Test Prep & Practice, UExcel Precalculus Algebra: Study Guide & Test Prep, UExcel Statistics: Study Guide & Test Prep, College Preparatory Mathematics: Help and Review, High School Precalculus: Tutoring Solution, High School Algebra I: Homework Help Resource, NY Regents Exam - Integrated Algebra: Help and Review, Create an account to start this course today. If we join the midpoints of each side, it gives a parallelogram. ","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/8957"}}],"_links":{"self":"https://dummies-api.dummies.com/v2/books/"}},"collections":[],"articleAds":{"footerAd":"

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