Lesson 9.1 Concept: Identify rectangular and triangular prisms, and circular cylinders. Guidelines: Prisms have bases that are polygons. A cylinder.

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Presentation transcript:

Lesson 9.1 Concept: Identify rectangular and triangular prisms, and circular cylinders. Guidelines: Prisms have bases that are polygons. A cylinder is not a prism, because the circular bases are not polygons. A flat surface of a prism that is a polygon is called a face or base. Not a polygon, so not a face. face ? face ? face not a flat surface

Identify and describe the solid. 4’ 2’ 10’ Name it. Rectangular Prism- because the base is a rectangular polygon. How may faces? 6 faces Height? h = 4’ Height is the distance between the rectangular bases

Identify and describe the solid. 2’ 14’ Name it. Cylinder- it has circles as bases, but it isn’t considered a prism without a polygon for a face. How may faces? No faces Height? h = 14’ Height is the distance between the circular bases

3’ Identify and describe the solid. 15’ 5’ Name it. Triangular Prism - because the base is a triangular polygon How may faces? 5 faces Height? h = 15’ Height is the distance between the triangular bases

Sketch a rectangular prism with a base of 8 cm by 2 cm, and a height of 10 cm.

Sketch a triangular prism with a height of 11 cm and whose triangular base has a height of 9 cm and a base length of 7 cm.

Sketch a circular cylinder with a height of 17 cm and a radius of 4 cm.