# Surf for More Math

## CHAPTER 11: 2-D AND 3-D GEOMETRY

**Lesson 6: Counting Edges and Vertices of 3-D Objects**

Use this interactive activity to encourage students to have fun on the Web while learning about counting edges and vertices of 3-D objects. Students can try this activity on their own or in pairs.

**Goal**

Identify and count the number of edges and vertices of 3-D objects.

**Builds Upon **

Student Book pages 266–267

**Instructions for Use**

2-D and 3-D Quiz tests students’ knowledge of edges, vertices, and faces of 3-D objects.

Click “Start Now,” then read the shape definition. Choose a shape from the list, then click “Submit Answer.” A new problem will appear below your last answer. Continue until all questions have been answered.