Lesson 1.3AIM: Points, Lines, and Planes

DO NOW: Use the isometric grid to draw the following figure.

DO NOW

Draw this image on the isometric dot paper provided.

Identifying Collinear Pointsa. Are points E, F, and C collinear?And what line are they on?

Yes, line m.

b. Are points E, F, and D collinear?

No.

c. Why are there arrow points on the lines?

They indicate the lines go on forever.

Identifying Planesa. Name the plane represented by the top.

EAB, ABF,BFE,or FEA all work.

b. Name the plane represented by the front.

DAB, ABC, BCD, or CDA all work.

c. What is the intersection of EFB and BCG?

Line FB

d. What is the intersection of ABC and ADH?

Line AD

Shade the Plane HDC

Shade the Plane EAC

Shade the Plane AEC

Summary Question

Fill in the Blanks with “point”, “line”, or “plane”.

The intersection of two lines is a _____________.

The intersection of two planes is a _____________.