Today was Algebra Day in geometry! We investigated to discover the definition and properties of a trapezoid midsegment and wrote up C-43 (The midsegment of a trapezoid is parallel to and half the sum of the bases.)

Then we practiced using and interpreting slope of sides of figures to connect to type of quadrilateral.

Students need to get their current conjectures caught up with good sketches (30-48). You should already have 42 and 43 from the similarity unit. And 31 is not necessary (pentagon sum is 540 degrees).

The quiz on Thursday-Friday is about 30 pts. It has True/False over the conjectures. It has missing angles and sides based on application of conjectures (particularly Polygon Sum). It also has an algebra problem a lot like #10 on p 167. Be sure that you can find sums of interior and exterior angles and single angles in equiangular polygons.

HW #17: p 167:1-4, 7-12, pp 275-278:1-6, 15-17.

We will begin the next block by working part of the attached sheet to practice for the quiz.

Then we practiced using and interpreting slope of sides of figures to connect to type of quadrilateral.

Students need to get their current conjectures caught up with good sketches (30-48). You should already have 42 and 43 from the similarity unit. And 31 is not necessary (pentagon sum is 540 degrees).

The quiz on Thursday-Friday is about 30 pts. It has True/False over the conjectures. It has missing angles and sides based on application of conjectures (particularly Polygon Sum). It also has an algebra problem a lot like #10 on p 167. Be sure that you can find sums of interior and exterior angles and single angles in equiangular polygons.

HW #17: p 167:1-4, 7-12, pp 275-278:1-6, 15-17.

We will begin the next block by working part of the attached sheet to practice for the quiz.

pre-ap_geometry_2017_5.1-4_review_worksheet.pdf |