Elaine

Section 3 Parallel and Perpendicular Lines Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

Interior Angles
<3, <4, <5, <6

Exterior Angles
<1, <2, <8, <7

Alternate Interior
<4 & <6
<3 & <5

Alternate Exterior
<1 & <7
<2 & <8

Corresponding Angles
<1 & <5
<2 & <6
<3 & <7
<4 & <8

Parallel Lines

Parallel Lines: are coplanar lines that do not intersect.
Perpendicular Lines: are lines that intersect and form right angles.

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Square
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A square has all sides and angles equal. You can see that by clicking on any point and dragging it all the sides and angles will always be equal.

Rectangle
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A rectangle is a polygon with opposite equal sides with the angles equaling 90 degrees.

Rectangle 2
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Rectangle 3- Perimeter & Area
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Perimeter: is the distance around the outside of the rectangle. 9+9+1+1= 20
Area: can be found by multiplying the base times the height. 9x1= 9