CK12 - Geometry

6. If you add diagonalsto , wherewill they intersect?

Use the figurebelowfor questions7-11. Polygon is a regularpolygon.Find eachindicated
measurement.

7.

8.

9.

10. Whatkind of triangleis?


11. Copypolygon and add auxiliarylines to makeeachof the following:

a. a parallelogram

b. a trapezoid

c. an isoscelestriangle

Answers

1. [Diff: 1]


2. [Diff: 1]


3. Slopesof and both = 1 [Diff: 1]


4. Both = -1 [Diff: 2]


5. This figureis aparallelogramsinceoppositesideshaveequalslopes(i.e., oppositesidesare parallel).

Additionally, it is arectanglebecauseeachangleis a 90oangle.We knowthis becausethe slopesof adjacent
sidesare oppositereciprocals[Diff: 2].

6. The diagonalswouldintersectat (0,0).One way to see this is to use the symmetryof the figure—each

corneris a 90orotationaroundthe originfrom adjacentcorners[Diff: 3].

7. [Diff: 2]


8. [Diff: 3]