Solid Figures

SOLID FIGURESChapter 21.1

Standards: MG 2.0, MG 2.5

Tuesday, August 11, 2009

OBJECTIVE

To describe properties of solid figures and name the faces that make up solid figures.



VOCABULARY

Face - A flat surface of a solid figure.



VOCABULARY


Vertex - a corner where three or more edges of a solid figure meet.


VOCABULARY


Edge - the line segment formed where two faces of a solid figure meet.


SOLID FIGURES

Name Faces Edges

Cube 6 12

6 squares


SOLID FIGURES

Name Faces Edges

Rectangular Prism 6 12

2 squares, 4 rectangles


SOLID FIGURES

Name Faces Edges

Square Pyramid 5 8

1square, 4 triangles


SOLID FIGURES

Name Faces Edges

Cylinder 2 2

2 circles, 1 rectangle


SOLID FIGURES

Name Faces Edges

Cone 1 1

1 circles, 1 rectangle


SOLID FIGURES

Name Faces Edges

Sphere 0 0


SOLID FIGURES

Activity

Materials: Solid Figures, Large Paper, Crayons

Steps: Traces the faces of several solid figures. Then name up the faces that make up each solid figure.

Name Faces Names and # of Faces


SOLID FIGURE

Practice:

Which figure goes with the faces.

1.

2.


SOLID FIGURE

Practice: Identify the solid figures below.

1. 2. 3.

4.


SOLID FIGURES

Try it on your own. PW


COMBINE SOLID FIGURES

21.2


OBJECTIVE

To identify solid figures within complex solid objects.

Standard MG 2.5, MG 2.6


COMBINE SOLID FIGURES

When you know how to identify solid figures, you’ll notice them in objects around you.

How is a cube different from a square?

If you were building a model of a rocket from solid figures, what two figures might you use?


LINE SEGMENTS AND ANGLES

21.3


OBJECTIVETo identify lines, line segments and rays and to classify

angles as greater than or less than a right angle.


VOCABULARY

Line - a straight path extending in both directions with no endpoints.


VOCABULARY

point - an exact position or location.


VOCABULARY

Line Segment - part of a line between two end points.


VOCABULARY

Ray - a part of a line that begins at one endpoints and continues in one direction.


VOCABULARY

Angle - a figure formed by two rays with the same endpoint.


VOCABULARY

Right Angle - a special angle that forms a square corner.


LINE SEGMENTS

1. What figure is drawn?2. How many sides does the

figure have?3. Home many line segments?

How are the lines and line segments alike?

How are they different?


ANGLES

Some angles are less than a right angle.


ANGLES

Some angles are greater than a right angle.


TRY IT OUT.


Solid Figures

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Transcript of Solid Figures