Computer Lab Activities

READ ALL OF THE DIRECTIONS CAREFULLY TO RECEIVE FULL CREDIT FOR TODAY'S LAB ACTIVITY.

1.       Complete the Geometer’s Sketchpad Activity – Triangle Side Lengths
Save your activity in the Y Drive under !Geometry with your last name, first initial, 7.1 
Example: SmithC7.1
***** A few minor changes to note in the directions:
--> Step 2 says "HIDE LINES", when you get to this step, the option is for "HIDE STRAIGHT OBJECTS"
--> Step 4 says, "From the Measure menu, choose Calculate." CALCULATE is actually found under the NUMBER menu.

2.      Complete the Geometer’s Sketchpad Activity - Dilations. Save your activity in the Y Drive under ! Geometry with your last name, first initial, 6.7 Example: SmithC6.7

Draw a dilation of the polygon with the given vertices using the scale factor k.

A (-3,6) B (0,0) C (-6,0) k: 2/3

STEP 1 Draw a triangle

From the Graph menu, choose Define Coordinate System to set the coordinate system in the drawing area. From the Graph menu, choose Plot Points. Select the points the construct segments.

STEP 2 Draw a dilation

Select points A, B, and C and the segments.  From the Transform menu, choose Dilate. Enter your scale factor. Use the Text tool to label the vertices of the dilated triangle P, Q, and R.) (It's ok if the dilation renames your triangle A' B' C'.)

STEP 3 Measure side lengths Measure the lengths of AB, BC, CA, PQ, QR, and PR.

Select points A and B. From the Measure menu, choose Distance. Repeat to find all of the segment measures.

3.      Determine the type of triangle by graphing it in Sketchpad.

Use Sketchpad to graph points A, B, and C using the coordinates given. Decide whether triangle ABC is acute, right, or obtuse. Write the answers on looseleaf with your PSM heading on top.

1.      A (1,5), B (1,1), C (6,1) ­______________________________

2.      A (2,4), B (4,1), C (7,1) ______________________________

3.      A (-2,1), B (2,1), C (0,5) ______________________________

4.      A (0,2), B (3,3), C (5,1) ______________________________

5.      A (-1,1), B (-2, -4), C (2, -3) ______________________________

6.      A(-3,5), B (0, -2), C (4,1) ______________________________

7.      A (-8, -4), B (-5, -2), C (-1, -7) ______________________________

8.      A (4,1), B (7, -2), C (2,-4) ______________________________

9.      A (-2,2), B (6,4), C (-4,10) ______________________________

10.  A (0,5), B (3,6), C(5,1) ______________________________

Homework tonight: study for quiz on 7.1 and 7.2; complete pg. 908 #1-18 all