Download Isosceles Triangle Investigation Name(s): DIRECTIONS: Use any

Isosceles Triangle Investigation
Name(s):
DIRECTIONS: Use any resources to answer the following questions. Each blank is
worth 1 point.
1) What is the definition of an isosceles triangle?
2) Use the “Properties of Isosceles Triangles” worksheet to construct an isosceles
triangle using Geometer’s Sketchpad. Cut and paste your triangle below (shrink it
so it doesn’t take up too much space after you paste it below)
3) The two equal sides of an isosceles triangle are called ________________
4) The non-equal side of an isosceles triangle is called the ________________
5) The two equal angles in an isosceles triangle are called ________________
6) The non-equal angle of an isosceles triangle is called the ________________
7) Find x in the following diagram
x= _____
x = _____
x = _____
x = _____
8) If a triangle is equilateral than the triangle is also _______________
9) Each angle in an equilateral triangle measures ______
10) Find x in the following diagrams
x = _____
x = _____
Extra Credit: Use Geometer’s Sketchpad to create a perfect equilateral triangle. If
you are able to do this measure each angle and side to prove that it is equilateral
and equiangular. Described how you used geometry (not cutting and pasting) to
create the triangle below, then print a copy of the sketch and attach to this page.