# Q3, W7: February 14-18 Geometry

Teacher Kristin Andreason Geometry Honors 8 March 8-12 Unit 5: Quadrilaterals
Standard(s) Taught

MAFS.912.G-CO.3.11:  Prove theorems about parallelograms; use theorems about parallelograms to solve problems. (Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.)

MAFS.912.G-GPE.2.4: Use coordinates to prove simple geometric theorems algebraically.

Learning Targets and Learning Criteria
• choose appropriate formula (such as distance, midpoint, or slope) to identify the geometric figure and its properties.
• prove or disprove that a figure defined by given points in the coordinate plane is a triangle, rectangle, kite, rhombus, trapezoid, square, regular polygon, etc.
• use coordinates and the appropriate formula to prove or disprove a claim about a figure.
•  Use properties of parallelograms, NOT assumptions, to correctly identify figures.
• use the distance formula to compute the perimeter and area given the coordinates of vertices of a polygon like triangle, square, rectangle, kite, rhombus, trapezoid, etc.
Classroom Activities

Monday/Tuesday:

1. We will do notes and practice together on Distance and Midpoint Formula
2. We will then do notes on Proving Shape Properties
3. Students will do Proving Shape Properties Practice independently

Wednesday:

1. Students will do a Proving Quadrilaterals are Parallelograms note page
2. Students will do IXL N.7

Thursday/Friday:

1. Students will work in groups to create posters on Proofs of Theorems of Parallelograms
2. Groups will present their proof
3. Students will do IXL’s N.1 and N.2 to review
Assignments Due
• Proving Shape Properties Practice
• IXL N.7
• Poster of a proof of a theorem about parallelograms