CHAPTER 1 MAIN CONCEPTS

1.1 Naming and identifying points, lines, planes, segments, rays
and angles.

collinear, noncollinear

Activity on pg 12.

1.2 Distance between two points, congruent segments
Segment Addition Postulate.

1.3 angle measure, congruent angles, Angle Addition Postulate
complementary angles, supplementary angles,
Linear Pair Property.

1.4 altitude, median, perpendicular bisectors in triangles, angle bisectors in triangles

Making Conjectures: The points on a perpendicular bisector of
a segment are . . . . .
The points on the angle bisector of a
are . . . .

Paper fold constructions: distance from a point to a line
perpendicular bisector and angle bisector

Compass and straigth edge constructions: perpendicular bisector
and angle bisector

1.5 points of concurrency in triangles
--circumcenter--circumscribed circle.
--incenter--inscribed circle.
--orthocenter (advanced)
--centroid (advanced)

Paper fold constructions of circumcenter, incenter, centroid (advanced), and orthocenter(advanced).

Explanations of circumcenter and incenter.

1.6 transformation, pre-image, image
translation, slide arrow
rotation, turn center, turn arrow
reflection, line of reflection

1.7 know the formulas or the rules for:
translation
reflection over the x-axis
reflection over the y-axis
180° rotation about the origin (0,0)
reflection over the line y=x