**Chapter 11- Understand Geometric Figures and Spatial Reasoning**

**Summary**

**11-1 Three-Dimensional Figures:** I can identify three dimensional geometric figures.

**Vocabulary:** Three-dimension figure: a solid figure with length, width, and height. Sphere: a solid figure that has the shape of a round ball. Pyramid: a solid figure with a square base and triangular shaped faces. Cube: a 3-dimensional figure in which every face is a square and every edge has the same length. Rectangular prism: a 3-dimensional figure with faces that are rectangles. Cone: a 3-dimensional figure that narrows to a point from a circular base. Cylinder: a solid figure shaped like a can.

**11-2 Faces, Edges, and Vertices:** I can describe the faces, edges, and vertices of three-dimensional figures.

**Vocabulary:** Face: the flat part of a 3 dimensional figure. Edge: the line where two sides or faces meet. Vertex (vertices): a point on a 2- or 3-dimensional figure where two or more edges meet together.

**11-3 Two-Dimensional Figures:** I can identify two-dimensional geometric figures.

**Vocabulary:** Two-dimension figure: a plane figure with only length and width. Parallelogram: a figure that has four sides. Each pair of opposite sides are equal and parallel. Hexagon: a figure that has six sides. Trapezoid: a four-sided figure with only two opposite sides the same length.

**11-4 PSS: Look for a Pattern:** I can use *look for a pattern* as a strategy to solve problems.

**11-5 Sides and Vertices:** I can describe two dimensional figures using sides and vertices.

**Vocabulary:** Side: one of the line segments that make up a figure.

**11-6 Compare Figures:** I can compare two-dimensional figures and three-dimensional figures.

**11-7 Make New Figures:** I can put figures together to form new figures and take figures apart to make new figures.

**11-8 PSS: Choose a Strategy:** I can choose the best strategy to solve problems.

**11-9 Locate Point on a Number Line:** I can use whole numbers to locate and name points on a number line.

**11-10 Coordinate Graphs:** I can use a coordinate graph to locate objects.

**Vocabulary:** Coordinate graph: a graph with points to show data.