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Geometry
Period 1
Mrs. Connolly
January 14, 2010
Homework: review sheet
Next Test: TBA
Today’s Notes:
Agenda
Review packet

Classwork
1. Given the line 5y= -3x+6 write an equation of a parallel line that passes through the point (5,1)
Remember parallel lines, same slope. Different y intercept
write and equation of a perpendicular line that passes through the points (3,1)
Geometry
2nd page
Mrs. Connolly
January 14, 2010
What is the relationship between a segment bisector and the segments midpoint?
The midpoint is the point in the middle; it’s where the segment bisector cuts the line segment.
Given a segment with endpoints
A (2, -5)
B (2 ,-1)
Find the midpoint of AB
Find the length of AB
Find the slope of AB
If two parallel lines are cut by a transversal
 Supplementary angles add to 180˚

Alternate interior angles are congruent

Corresponding angles are congruent

Alternate exterior angles are congruent

A linear pair of angles add to 180˚
Geometry
3rd page
Mrs. Connolly
January 14, 2010
Vertical angles are formed by two intersecting lines and they are congruent
If two angles are complementary, their measures add to 90˚
AB and CD intersect at point E, mAEC  6 x  20 , and mDEB  10 x .
What is the mAED ?
Angles A and B form a linear pair. The measure of angle A is 18 more than twice the measure of angle B. Find
the measure of each angle.
In the diagram:
and
is a transversal.
m<JLB=6x and m<LJD=7x+5 what is the value of x?
Add to 180
If
Geometry
4th page
Mrs. Connolly
January 14, 2010
The ratio of the measures of two complementary angles is 5:4.
What is the measure of the larger angle?
Line 1 contained the points A(2, -1) and B(6, 7).
Line 2 contained the points C(-3, -5) and D(5, -1).
Are Line 1 and Line 2 parallel, perpendicular or neither? Mathematically explain how you know.
Use the diagram of the rectangular
solid to answer the following questions.
K
A
B
E
F
D
H
C
M
Name 3 collinear points
Name 3 non-collinear points
Name 4 coplanar points
Name 4 non-coplanar points
Name 2 parallel line segments
Name 2 perpendicular line segments
Name 2 skew line segments
G