**MYSTERY QUADRILATERALS**

__Directions__: Determine the** most specific name for each mystery
quadrilateral **(parallelogram, rectangle, square, rhombus, trapezoid, or
quadrilateral). You must provide reasoning how you determine each mystery
quadrilateral by writing a short paragraph (see example below). Support your
answer with the measurements you have taken. Make sure that you list all of the
important measurements on your paper. Also be sure to state why the
quadrilateral could NOT be any other name.

*Note: If lines have the same slope, then they are parallel. To measure
the slope, click on the segment and go to the Measure menu and select slope.
Make sure you compare the slopes of opposite sides to determine if lines are
parallel.*

__EXAMPLE__

**Sample Solution:** I think this quadrilateral is a RHOMBUS because it
has four equal sides and does not have right angles. If all four angles were
right angles, then the quadrilateral would be a square. If all four sides were
not equal, and only two pairs of sides were equal, then the quadrilateral would
be a parallelogram.

**Getting Started...**

v
Open (double click) your computer's Hard Drive
and find the folder titled *mystery*. Click on the file *quad1.gsp* to start.

v
Once the file opens, go to **DISPLAY ->
PREFERENCES** and make sure that the precision for all measurements is in
HUNDREDTHS and that the distances are given in CENTIMETERS.

**MYSTERY QUADRILATERAL #1 (quad1.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.

*** __To OPEN a new quadrilateral, FILE, OPEN and DOUBLE CLICK on
the new file __***

**MYSTERY QUADRILATERAL #2 (quad2.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.

**MYSTERY QUADRILATERAL #3 (quad3.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.

**MYSTERY QUADRILATERAL #4 (quad4.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.

**MYSTERY QUADRILATERAL #5 (quad5.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.

**MYSTERY QUADRILATERAL #6 (quad6.gsp) **sketch
of diagram and important measurements!

Solution Paragraph.