Constructions Lab What is a construction A construction

Constructions Lab

What is a construction? • A construction is a method of creating geometric figures without the benefit of measuring tools. • We only use a pencil, straightedge, and a compass.

Construction #1: Copying a Line Segment • Given a line segment of a certain length, I want to copy that line segment and create a congruent segment without using a ruler. • How to copy a segment: • http: //www. youtube. com/watch? v=fx 5 s. Rk 70 KU 4 • Now complete the practice on your Lab

Construction #2: Construct a Perpendicular Bisector • A perpendicular bisector is a line that BISECTS a segment at a RIGHT angle. • To create a perpendicular bisector: http: //www. youtube. com/watch? v=RKk 7 Eu. Lun. Q 8 • Complete the 2 practice bisectors on your page.

Construction #3: Copying an Angle • Similar to copying a segment, sometimes we want to copy an angle to create a new one that is CONGRUENT to the first. • How to copy an angle: http: //www. youtube. com/watch? v=38 dkb_0 egj. U • Copy the two angles in the practice

Construction #4: Bisecting an Angle • An angle bisector splits an angle in half into TWO congruent angles that are half the measure of the original angle. • How to bisect an Angle: http: //www. youtube. com/watch? v=mj. XOHFCy. CH M • Bisect the two angles in the practice