Page 45


This is the BEST PAGE in all of Exeter!

This will be done in class.




Page 46


Problem 1


02-10-2011_Image002.jpg



Problem 2


By symmetry, the circumcenter will lie on the y-axis. In particular, it will be where the perpendicular bisector of, say, side AC intersects the y-axis.

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)



Problem 3


A pair of equal, nonadjacent sides means that one pair of opposite sides are congruent.
A pair of equal, nonadjacent angles means that one pair of opposite angles are congruent.

Play with the applet below and determine for yourself.

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)



Problem 4


Each small triangle is Isosceles. Why? Is each triangle Equilateral? Why?

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)

2011-02-10_0001.jpg



Problem 5


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)



Problem 6


Hint: Something to do with triangles.



Problem 7






Problem 8 and 9


2011-02-10_0002.jpg

2011-02-10_0003.jpg



Problem 10


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)



Problem 11


Does this applet help you to see how the length of this segment is related to the lengths of the two bases?

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)



Problem 12






Problem 13


All of the triangle around the perimeter of the shape are equilateral (Why?).

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)