#1) Find the midpoint of [math]\text{\overline{BC}}[/math]. Show the midpoint on the graph, and write the name and coordinates of the point.
#2) What is the midpoint of [math]\text{\overline{PQ}}[/math] given P(-2, 3p) and Q(4n, p)?
[size=150][color=#0000ff][b]RAY: [/b]A ray has one endpoint and extends indefinitely in one direction.[br][br][/color][/size][color=#0000ff][b]OPPOSITE RAYS: [/b]two rays with a common endpoint that form a straight line.[/color]
[size=150][color=#0000ff]An [b]ANGLE [/b]consists of two different rays with the same endpoint. The rays are SIDES and the endpoint is the VERTEX.[/color][/size]
#7) Use the applet! Drag my angle around.
#8) Sometimes you will not see the entire rays that make the angle sides-- for example, if the angle is part of a triangle. In the applet, lengthen and shorten the segment sides of the angle-- do longer sides mean a larger angle?[br][br]Name this angle in 3 different ways.
No! The side length doesn't affect the angle measure.[br][br][math]\angle X[/math] , [math]\angle AXB[/math] , or [math]\angle BXA[/math]
[size=200][color=#0000ff]MEASURING ANGLES ON GEOGEBRA![/color][/size]
#9) Measure the angle shown with the class, and then check your answer.[br]Now spend some time changing the angle, and measuring it. Be sure to measure small and large angles, and also to use both protractors.
[size=150][color=#0000ff][size=200]CLASSIFYING ANGLES[/size][/color][/size]
#10) Write an equation involving the angles in the applet.
[math]m\angle CBD+m\angle DBA=m\angle CBA[/math]