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

**Lesson 1: Veritcal and Horizontal Lines and Faces **

Use these interactive activities to encourage your child to have fun on the Web while learning about 2-D and 3-D Geometry.

**Goal**

Identify how to draw horizontal and vertical lines, edges and faces.

**Builds Upon**

Student Book pages 366–369

**Instructions for Use**

**3-D Solids** allows your child to manipulate 3-D shapes and find out how many edges, vertices, and faces they have.

Click on either “Prisms” or “Pyramids” and then click on a shape you wish you see. Determine how many edges, vertices, and faces there are. Place the shape in one position: How many edges are horizontal in this position? How many are vertical? How many faces are horizontal? How many are vertical?

**Geometric Solids** allows your child to learn about various geometric solids and their properties.

Manipulate and color each shape to explore the number of faces, edges, and vertices. Click “New Shape” to get another shape. For each shape determine which faces and which edges are vertical and which are horizontal.