Lessons

1. Basics
2. Deductive Reasoning
3 - Parallel lines
4 - Congruent Triangles
6 - Inequalities
7 - Similar Polygon
8 - Rt. Triangles
9 - Circles
10 - Constructions
11 - Areas of 2D objects
12 - Areas and Volumes
13 - Coordinates

Perpendicular Lines (construction)

Objective:

• To be able to make some perpendicular lines construction.

Lesson 10-2 Perpendicular Lines.

We all know what a perpendicular line is (intersection that forms an 90º angle), so let's jump right into the construction.

 Construct: Perpendicular Line Way #1 (Segment) 1.Using any radius greater than ½AB, draw four arcs of equal radii, two with center A and two with center B. Label the points of intersections of there arcs X and Y 2. Draw line XY
 Construct: Perpendicular Line Way #2 (Point Of Line) 1. Using C as the center and any radius, draw arcs intersecting k at X and Y 2. Using X as the center and a radius greater than CX, draw an arc.  Using Y as center and the same radius, draw and arc intersecting the arc with center X at a point Z. 3. Draw line CZ.
 Construct: Perpendicular Line Way #3 (Point Outside) 1. Using P as center, draw two arcs of equal radii that intersect k at points X and Y. 2. Using X and Y as centers and a suitable radius, draw arcs that intersects at a point Z. 3. Draw line PZ.

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