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Points, Lines, and PlanesPowerPoint Presentation

Points, Lines, and Planes

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Points, Lines, and Planes

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Shade the plane that

contains X, Y, and Z.

Points X, Y, and Z are the vertices of one of the

four triangular faces of the pyramid. To shade

the plane, shade the interior of the triangle

formed by X, Y, and Z.

HE

Use the diagram at right.

1. Name three collinear points.

2. Name two different planes that contain points C and G.

3. Name the intersection of plane AED and plane HEG.

4. How many planes contain the points A, F, and H?

5. Show that this conjecture is false by finding one counterexample: Two planes always intersect in exactly one line.

D, J, and H

planes BCGF and CGHD

1

Sample: Planes AEHD and BFGC never intersect.

As you look at the cube, the front face is on which plane?

The back face is on which plane?

The left face is on which plane?

The back and left faces of the cube intersect at?

Planes HGC and AED intersect vertically at?

What is the intersection of plane HGC and plane AED?

.

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