# Q3, W10: March 7-10 Geometry Teacher Kristin Andreason Geometry Honors 8 March 7-10 Unit 6: Two-Dimensional Measurements
Standard(s) Taught

MAFS.912.G-GPE.2.7:  Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula.

MAFS.912.GC.2.5:  Derive using similarity the fact that the length of the arc intercepted by an
angle is proportional to the radius and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

Learning Targets and Learning Criteria
• 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.
• decompose more complex figures whose vertices are given using coordinates into familiar shapes that are easier to work with.
• describe and illustrate how a rectangle, parallelogram, and trapezoid are mapped onto themselves using transformations.
• calculate the number of lines of reflection symmetry and the degree of rotational symmetry of any regular polygon.
• define inscribed polygons.
• construct an equilateral triangle, a square, a hexagon inscribed in a circle.
• explain the steps to constructing and equilateral triangle, a square, and a regular hexagon inscribed in a circle.w a specific transformation when given a geometric figure and a rotation, reflection, or translation.
• predict and verify the sequence of transformations (a composition) that will map a figure onto another.
Classroom Activities

Monday/Tuesday:

1. Students will create a foldable on Arc Length and Sector Area
2. Students will do a Kuta Software worksheet on arc length and sector area
3. We will watch a video on converting between degrees and radians
4. Students will do IXL U.4

Wednesday:

1. Students will have the opportunity to take the Quadrilaterals Summative Retake
2. Students will also work on finishing IXL

Thursday:

1. We will learn how to find the area of compound figures
2. Students will do a worksheet on area of compound figures
3. Students will also do a worksheet on finding area and perimeter on the coordinate plane
Assignments Due
• IXL U.4
• Worksheet on Arc Length and Sector Area
• Worksheet on Area of Compound Figures