unit 9: geometry – 6 th grade lesson 6: solid figures

UNIT 9

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CORNELL NOTES HEADER

Topic: Geometry 6th Grade (Unit 9 pg. 6)

E. Q.: How are two-dimensional and three-dimensional figures related?

Name: _____________________________Date: _____________________________Class: _____________________________

Chp. 10 Lesson 5 –Solid Figures

PARTS OF THREE DIMENSIONAL FIGURES

face – the polygons that form the solid figure.

edge – the segments where the faces of a figure meet.

vertex – the point where edges meet. (The plural is vertices.)

edges

face

vertex

COUNTING FACES, EDGES & VERTICES EX.Ex. Count the number of faces, edges, and vertices of the

square pyramid shown.

faces:

5

edges:

8

vertices:

5

CLASSIFYING SOLIDS

prism – a solid with two parallel bases that are congruent polygons.

Ex. rectangular prism and triangular prism

cylinder – a solid with two parallel bases that are congruent circles.

Ex.

pyramid – a solid made with polygons. The base can be any polygon, and the other

polygons are triangles that share a common vertex.

Ex.

CLASSIFYING SOLIDS CONTINUED

cone – a solid with one circular base and a vertex that is not in the same plane.

Ex.

sphere – the set of all points that are the same distance from a pointed called the

center.

Ex.

HOW TO DRAW A SOLID

Draw a triangular prism. (textbook pg. 542)

(1) Draw the congruent bases

(2) Connect the corresponding vertices.

(3) Make hidden lines by partially erasing lines.