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ERIC Number: EJ925653
Record Type: Journal
Publication Date: 2011
Pages: 7
Abstractor: As Provided
Reference Count: 1
ISSN: ISSN-0020-739X
Maximal Outboxes of Quadrilaterals
Zhao, Dongsheng
International Journal of Mathematical Education in Science and Technology, v42 n4 p534-540 2011
An outbox of a quadrilateral is a rectangle such that each vertex of the given quadrilateral lies on one side of the rectangle and different vertices lie on different sides. We first investigate those quadrilaterals whose every outbox is a square. Next, we consider the maximal outboxes of rectangles and those quadrilaterals with perpendicular diagonals. At last, we use the theorem from calculus to give the formula of the maximal area of outboxes of an arbitrary quadrilateral, this serves as a good example illustrating the applications of calculus. (Contains 7 figures.)
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A