Lab 3 Report (due Friday, 10/18)

Answer questions from Lab here.

1. Exp 5.2, Investigation 2, Construction – Distance Slider

Q1:

Q3:

2. Exp 5.2, Investigation 2, Construction – Other Measurements

Q2:

Q4 (there may be a typo here: the relationship is between CD and CE):

Q6:

3. Exp 5.3, Investigation 1, Within an Inch of a Line

Q1:

Q3:

Using your observations in Explore More – Distance to a Segment. Sketch the outline of the set of points that are at distance d from the segment AB in the figure.

4. Three Scripts

Did you succeed in constructing the 3 scripts?  Check off each one.

• Strip from Midline and Point   _____
• Strip from Midline and Length:  _____
• Tangent Circle  _____

5. Exp 5.3, Investigation 3, Ripples, Strips, and Inscribed Circles.

Q1: How many?      How to construct? 

Q2: What shape?    What homework problem gives the justification?

Q3: Sketch the 4 traces

Q4:  Why are the circles congruent?

6. Exp 5.3, Investigation 3: These are the Big Conclusions.  Use another sheet.

Q1: How many points?  Give a proof.

Q2: All tangent?  Give a good explanation.

Q3: State clearly the facts about concurrent angle bisectors (interior and exterior).

7. Construction on paper

Draw an extended triangle ABC (not a special triangle) on a sheet of paper.  Use the two sides of a ruler to draw 3 strips; each having a triangle side as midline. Then draw the 6 angle bisecting lines (3 interior, 3 exterior) and construct with striaightedge and compass the incircle and the 3 excircles.