# Lesson 2/4

## (1.4.1) Warmup Part 1: Check out this construction:

## (Warmup Part 2) What do you notice about the above construction? What do you wonder?

## (1.2.2) Use straightedge and compass moves to build your own pattern using the circle and radius as a place to start. As you make your pattern, record each move on a separate sheet of blank paper. Use precise vocabulary so someone can make a perfect copy

## List instructions so that someone else can make your construction.

## (1.2.3) Use someone else's instructions to create their construction here.

## (1.4.3) Use straightedge and compass moves to construct at least 2 equilateral triangles of different sizes.

## (1.2.4) Cool Down: Use the following instructions in the applet below.

Use these straightedge and compass moves to create a line parallel to the given line that goes through point B:

- Create a line through A and B extending in both directions. Label this line "p."
- Create a circle centered at A with radius AB. This circle intersects with line "l" in 2 places. Label the intersection point to the right of A as C.
- Create a circle centered at B with radius BA. This circle intersects with line "p" at A and 1 other point. Label the new intersection point as D.
- Create a circle centered at D with a radius of length BC. This circle intersects with the circle centered at B in 2 places. Label the intersection point to the right of B as E.
- Using a different colored pencil, create a line through B and E extending in both directions.