CBSE Class 9 Answered
in fig.,ABCD is a rectangle.if angle OAB = 28 find angle OBC. also AC and BD intersect at O
Asked by | 20 Jul, 2008, 12:12: AM
Expert Answer
in rectangle ABCD , angle OAB = 28 given
AC and BD intersect at O
therefore OAB is an isoceles triangle ... [ since the diagonals are congruent and bisect each other in rectangle ]
then angle OAB = angleOBA
We know that angle ABC = 90
so angle OBC = angle ABC - angle OBA ==> 90 - 28 == 62
angle OBC == 62 degrees
Answered by | 24 Jul, 2008, 09:01: AM
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