Posted: October 28, 2015

I apologize for my recent lack of acitivity on my teacher page. In GMF10 we have finished our unit on mass, temperature, and volume conversions. We have started our new unit on angles and parallel lines. Some terminology the students should know and be able to apply are : acute, right, obtuse, straight, reflex, true bearing, angle, angle measure, angle referents (0, 45, 90, 180, and 360 degrees).We worked on estimating angles using the angle referents that we should know. We practiced finding true bearings from one location to another (always measuring the angle from North, clockwise to our destination). Students should have an understanding of a compass and be able to label one to help them determine a bearing.We worked on constructing perpendicular bisectors, angle bisectors, and angle replicates with a straight edge (ruler) and compass. All students should have a booklet with step-by-step instructions and examples.Students had a small quiz yesterday on these constructions and then we began reviewing geometric theorems. The ones discussed yesterday were: triangle angle sum theorem, isosceles triangle theorem, and complementary/supplementary angles. We did a couple examples in class and students were assigned some homework questions. This lesson is attached.Today we will be looking at parallel line theorems and working on some practice questions with those.
PDF icon geometry_theorems.pdf2.53 MB