4 items are filed under this topic.
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If a parallelogram is a cyclic quadrilateral then it is a rectangle |
2012-02-01 |
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From Kim:
Show that if a parallelogram is a cyclic quadrilateral then it is a rectangle.
Hint: Observe that in a parallelogram ABCD we always have Triangle ABC is congruent to Triangle CDA.
Answered by Robert Dawson and Chris Fisher. |
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A cyclic quadrilateral |
2011-08-15 |
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From Tim:
Hi! I've been working on this for a while and I'm quite stuck. If anyone can help that would be great.
The sides BC and AD of a quadrilateral ABCD are parallel. A circle meets the side AB at B and E and the side CD at C and F. Prove that the quadrilateral AEFD is cyclic.
Answered by Chris Fisher. |
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A cyclic quadrilateral |
2009-01-23 |
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From Murtaza:
Line ATB touches a circle at T and TC is a diameter. AC and BC cut the circle at D and E respectively.Prove that the quadrilateral ADEB is cyclic.
Answered by Robert Dawson and Chris Fisher. |
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A cyclic quadrilateral |
2006-11-20 |
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From Namrata:
If two sides of a cyclic quadrilateral are parallel, prove that
(1) remaining two sides are equal,
(2) both diagonals are equal.
Answered by Penny Nom. |
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