Here are the notes:
Bisect: -Bi means "two"
-sect means "cut"
-so bisect means to cut in two
A line that divides a line segment in half and is at right angles to it
How can you create or draw a perpendicular bisector?
1. Free hand, o.k. but not perfect
2. Protractor gets us 9o degree angle
-Ruler cuts line in half
a) Open compass to greater than half the distance of line
b) Place compass on point A, draw an arc
c) Place compass on point B, draw an arc
d) Use a ruler to connect the intersections of the arcs that line is a perpendicular bisector
Angle: the figure formed by two lines with a common endpoint called a vertex
Acute angle: less than 90 degrees
Obtuse angle: more than 90 degrees
- less than 180 degrees
How do we make an angle bisector?
1. Free hand not perfect not accurate enough
a) Arc from vertex
b) Arc from point S (intersection of line and arc)
c) Arc from point T (intersection of line and arc)
d) Line from arc intersections to vertex that is your angle bisector
After taking down all the notes, we worked on page 116-121 (Math Links)
I pick Telissa to do the next scribepost