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2 Prove that certain quadrilaterals are parallelograms 3 Apply theorems about parallel loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsusreader031viewer20220304165aa268d37f8b9aa0108d311ahtml5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=-apply-the-definition-of-a-parallelogram-and-the-theorems-about-properties-of-ahtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Apply the definition of a parallelogram and the theorems about properties of a parallelogram 2 Prove that certain quadrilaterals are parallelograms 3 Apply theorems about parallel loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsusreader031viewer20220304165aa268d37f8b9aa0108d311ahtml5thumbnails3jpg 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