Our focus for this block is two-fold: to make sure we know what similarity and dilation are and how to solve problems with them, and to discover and apply parallel proportionality conjectures from the last section of Chapter 11 of Discovering Geometry.
HW #5 - p 276:5, p 577:20, p 583:5-7,11,13, p 588:1-3, p 607:1-8.
Be sure to write and solve a proportion if you are finding a missing side length. It will be required on almost every question on the unit test.
The review warm-up is attached below for those who were absent.
The new truth: If a parallel line connects two sides of a triangle, it divides those two sides proportionally. This also works if there are multiple parallel lines (or segments). It even work for trapezoids (that would make a triangle if you extended two sides). There is a great proof of this on p 605 in the textbook.
ACTM Contest is coming soon. Save the date: March 4, 10:00-11:00 am. $2.00