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Quadrilaterals

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Information about Quadrilaterals
Education

Published on March 13, 2009

Author: joshsmith1110

Source: authorstream.com

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Slide 1: QUADRILATERALS Slide 2: WHAT A QUADRILATERAL ? IS QUADRILATERAL : QUADRILATERAL A quadrilateral is a polygon with four sides. A quadrilateral is named by its vertices. Slide 4: In figure A, the quadrilateral is named PQRS or QRSP or RSPQ or SPQR. The order of the vertices is important. In figure B, the quadrilateral is named MNOP. In figure C, the quadrilateral is named DEFG. A B C P Q R S M N O P D E F G In quadrilateral ABCD, the vertices are A, B,C, and D. Vertices A and B, B and C, C and D, D and A are consecutives vertices. Vertices A and C, B and D are opposite vertices. D : In quadrilateral ABCD, the vertices are A, B,C, and D. Vertices A and B, B and C, C and D, D and A are consecutives vertices. Vertices A and C, B and D are opposite vertices. D A B C D Two sides with common vertex, like AB and BC, are consecutive sides. AB and DC, AD and BC, on the other hand are opposite hand. : Two sides with common vertex, like AB and BC, are consecutive sides. AB and DC, AD and BC, on the other hand are opposite hand. A B C D Slide 7: Two angles with a common side, like <A and <D, are consecutive angles. <A and <C, <B and <D on the other hand are opposite angles. A B C D Segments joining opposite vertices like AC and BD are called diagonals of the quadrilateral. : A D B C Segments joining opposite vertices like AC and BD are called diagonals of the quadrilateral. Convex quadrilateral QRST, QS and RT intersect. : Convex quadrilateral QRST, QS and RT intersect. Nonconvex quadrilateral MNOP, MO and NP do not intersect. T Q R S M N O P Presented to: Mr. Salvador Salazar : Presented to: Mr. Salvador Salazar Presented by: Mesias, Noeme L. BSEd Math 4

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