lesson
Proving a Quadrilateral Is a Parallelogram Using Opposite Angles
Use the converse of the opposite angles property to prove a quadrilateral is a parallelogram.
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Properties and Proofs of Parallelograms
5 lessons
Goal
Prove a quadrilateral is a parallelogram and apply parallelogram properties to solve problems.
5 lessons
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Learning standards covered
111.41(b)(6)(E)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradeprove a quadrilateral is a parallelogram, rectangle, square, or rhombus using opposite sides, opposite angles, or diagonals and apply these relationships to solve problems.
Open Global Standard:OGM.11.GEO.4
111.41(b)(1)(G)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradedisplay, explain, and justify mathematical ideas and arguments using precise mathematical language in written or oral communication.
Open Global Standard:OGM.11.GEO.1
OGM.11.GEO.4OGM.11.GEO.1