Math 2 - Unit 2 - Angles
#1 and 2
#1) Find the midpoint of . Show the midpoint on the graph, and write the name and coordinates of the point.
#2) What is the midpoint of given P(-2, 3p) and Q(4n, p)?
RAY: A ray has one endpoint and extends indefinitely in one direction.
OPPOSITE RAYS: two rays with a common endpoint that form a straight line.
An ANGLE consists of two different rays with the same endpoint. The rays are SIDES and the endpoint is the VERTEX.
#7) Use the applet! Drag my angle around.
#9
#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? Name this angle in 3 different ways.
MEASURING ANGLES ON GEOGEBRA!
#9
#9) Measure the angle shown with the class, and then check your answer.
Now spend some time changing the angle, and measuring it. Be sure to measure small and large angles, and also to use both protractors.
CLASSIFYING ANGLES
#10
#10) Write an equation involving the angles in the applet.