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6.M.NS.C.06bc: I can reflect ordered pairs across one or more axes.

These are the possible scores a students can earn on the AzMERIT exam. We want all students to move into the *Proficient *or *Highly Proficient* category.

*Minimally Proficient*: Finds the area given all the measurements for triangles or polygons decomposed into rectangles and triangles, finds the volume of a right rectangular prism with whole number edges, and creates polygons in the coordinate plane given coordinates for the vertices.

*Partially Proficient*: Finds the area given some measures for triangles or polygons by decomposing into rectangles and triangles, finds the volume of a right rectangular prism with one fractional edge, and uses coordinates to find the length of a side joining points with the same first or second coordinate.

** Proficient: **Solves a real world context by finding the area given some measures for triangles or polygons by decomposing into rectangles and triangles, finds the volume of a right rectangular prism with fractional edges, and using coordinates for vertices of a polygon.

** Highly Proficient:** Solves real world multi-step geometric problems including decimal and fractional measurements, finds missing side length of a right rectangular prism given a volume and fractional side lengths, and finds a missing vertex of a polygon given other vertices.

Points on a graph have "addresses" that describe where they are located, and we can calculate the distance between any two "addresses". If we know some of the addresses of a polygon, we can fill in the missing ones.

**Vocab** - Description.

This video shows how to find the missing vertex of a polygon: Khan Academy video

Another example, including how to plot all the vertices, then find the missing one: Khan Academy video

Another example of finding the missing vertex. Shows finding a diagonal line: YouTube video

See below for a practice worksheet that covers this material. You are free to download and print it.

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