# 3 Act Math Tasks

## Organized by the Common Core States Standard (CCSS) Initiative

**Not Common Core? Go to Ontario Curriculum alignment**

# Geometry

## G-GPE.7

**Overall Expectation Description:**

G-GPE.7 – High School Geometry – Expressing Geometric Properties with Equations

Use coordinates to prove simple geometric theorems algebraically.Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula.

## Related 3 Act Math Tasks:

## Obscure Geometry

### What fraction is each small piece of the whole?

**Shared By:**

Dan Meyer

**Math Topic:**

Use coordinates to prove simple geometric theorems algebraically.

**Common Core State Standard Alignment:**