ACE 5.2: Using Mirrors to find Heights

We practiced more direct and indirect measurement, and applications of our knowledge of similar triangles, by determining the height of tall things indoors, using mirrors, in problem 5.2 today. Classnotes may be downloaded here, and the handout here. We will discuss this more on Monday, so please finish calculating the height of the ceiling if you did not finish this in class.

Students also turned in their credit cards, and there were many creative and proportional ones crafted by the class. They will be up in the Main Room soon for all to admire. Be sure you know the scale factor of your card.

For homework, please choose one of the options below on the handout, which can be downloaded here.

Option 1
Problems 3-4, 22-25

Option 2
Problems 4, 22, 24-25, 35-36

Due Tuesday, December 15.

Remember that Part II of Holiday Madne$$, the collage and list of your purchases (with price and price + tax), is due Monday, Dec. 14. Have a great weekend!