Calculate the perimeter of quadrilateral [i]ABCD[/i]. [i]Note[/i]: Drag the blue points to try different figures.

[list=1] [*]Calculate the length of each side of the quadrilateral using the distance formula. [*]Calculate the perimeter of quadrilateral [i]ABCD[/i] by finding the sum of the sides. [/list] This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on their resources.

Calculate the area of triangle [i]ABC[/i]. [i]Note[/i]: Drag the blue points to try different figures.

[list=1] [*]Find the equation of the line that represents the base of the triangle. [*]Find the equation of the line that represents the height of the triangle. [*]Find the point of intersection of the line representing the height and the line representing the base of the triangle. [*]Calculate the length of the base of the triangle. [*]Calculate the length of the height from point[i] B[/i] to the point of intersection. [*]Calculate the area of triangle [i]ABC[/i]. [/list] This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on their resources.