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Texas Instruments
9-12
45 Minutes
TI Connect™ CE
Students determine the sum of the interior angles of a quadrilateral.
Students will construct a quadrilateral and measure the interior angles.
Students will find the sum of the interior angles of their quadrilateral. Then, they will move vertices to change the angle measures and find the sum again. Students should find that the sum of the interior angles of a quadrilateral is always 360 degrees.