DS 1000

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DS 1000

by radhika1306 » Wed Aug 29, 2007 6:38 am
Is quadrilateral RSTV a rectangle?
(1) The measure of ∠RST is 90o
(2) The measure of ∠TVR is 90o

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by agps » Wed Aug 29, 2007 7:41 am
My first guess would be E.
90º+90º=180, sum af angles of quadrilateral is 360;
leaves 180º possible 90º+90º(which would mean it's a rectangle), 100º+80º (which would mean it's not);
OA?