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Understanding Perimeter and Area: Definitions, Steps, and Formulas

This guide explains the concepts of perimeter and area for various two-dimensional figures, including circles, triangles, rectangles, and trapezoids. It provides a clear definition of perimeter as the outer boundary length of a figure, along with steps to find it. Formulas for calculating the area of different shapes, such as triangles (A=1/2 B x h), rectangles (A=L x W), trapezoids (A=1/2(a+b)h), and circles (A=πr²) are included. Perfect for students and anyone wanting to master these essential geometry concepts!

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Understanding Perimeter and Area: Definitions, Steps, and Formulas

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  1. By: Mr. Listen Up (Rydeldrick Hawthorne) Perimeter & Area

  2. DEFINITION OF PERIMETER • 1.The outer boundary of a two-dimensional figure. • 2. The length of such a boundary. Gee! Thanks for the info.

  3. STEPS TO FIND PERIMETER • STEP 1) Look at the numbers of whatever your trying to find perimeter of. • STEP 2) Add the numbers together. • STEP 3) Say YES! (because you found the answer and got it right)

  4. Circumference of a Circle AB = DiameterMust pass through the centre of the circle. The Diameter is equal to twice the radius.OC = RadiusThe radius is a line segment that begin from the centre and touches any point on the circle.ED = ChordThe chord joins any two points on a circle.FG = TangentA line with one point common to the circle. EHD = ArcOnly the portion of the circle that is between two points on the circle.ADB = SemicircleAlso considered to be an arc that is exactly half of the circle.OCB = SectorThe area between two radii and the arc.COB = Central AngleFormed by two radiuses.

  5. Formula`s to finding Area of the following Figures: • Triangle ; A=1/2 B x h ! • Rectangle ; A=L x W ! • Trapezoid ; A=1/2(a + b)h ! • Circle ; A= π r²

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