div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader030fdocumentsinreader030viewer20220225215b2a4dbf7f8b9abb5b8b4a0ehtml5page1jpg target=_blank img data-url=document-2013-02-05-show-that-a-quadrilateral-is-a-parallelogram-vocabulary-theoremhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: burgessmathweeblycomburgessmathweeblycomuploads9195919501ch_6_rev · 2013-02-05 · Show that a quadrilateral is a parallelogram VOCABULARY Theorem 66 quadrilateral loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsinreader030viewer20220225215b2a4dbf7f8b9abb5b8b4a0ehtml5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader030fdocumentsinreader030viewer20220225215b2a4dbf7f8b9abb5b8b4a0ehtml5page2jpg target=_blank img data-url=document-2013-02-05-show-that-a-quadrilateral-is-a-parallelogram-vocabulary-theoremhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: burgessmathweeblycomburgessmathweeblycomuploads9195919501ch_6_rev · 2013-02-05 · Show that a quadrilateral is a parallelogram VOCABULARY Theorem 66 quadrilateral loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsinreader030viewer20220225215b2a4dbf7f8b9abb5b8b4a0ehtml5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader030fdocumentsinreader030viewer20220225215b2a4dbf7f8b9abb5b8b4a0ehtml5page3jpg target=_blank img data-url=document-2013-02-05-show-that-a-quadrilateral-is-a-parallelogram-vocabulary-theoremhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: burgessmathweeblycomburgessmathweeblycomuploads9195919501ch_6_rev ·...