7-2 Review
Conditions are given. Will all triangles
satisfying the same conditions be
congruent? Use one of the four
theorems to justify your answer.
1. In triangle JTP, m<T = 66°, m<P = 51°,
TP = 3 cm
2. In triangle HOG, m<H = 53°, m<O =
47°, and m<G = 80°
7-2 Review
Conditions are given. Will all triangles
satisfying the same conditions be
congruent? Use one of the four
theorems to justify your answer.
1. In triangle JTP, m<T = 66°, m<P = 51°,
TP = 3 cm Yes, SAS
2. In triangle HOG, m<H = 53°, m<O =
47°, and m<G = 80° No, AAA does not
work
Quote of the Day
“A good hockey player plays
where the puck is. A great hockey
player plays where the puck is
going to be.”
-Wayne Gretzky
B day Grade pages 375-377 2, 5-13,
15-18, 20-24
A day Collect Master 7-3 B
7-7 Properties of
Parallelograms
1.
2.
3.
Opposite sides are congruent.
Opposite angles are congruent.
The diagonals intersect at their
midpoints.
Example
In parallelogram WXYZ, WQ = 4, XQ =
6, and YZ = 7.
W
X
Q
Z
Y
Find QY and WX.
No name Theorem (?)
“The distance between parallel lines is
constant.”
A
B
C
D
AC = BD
Symmetry in Parallelograms
1.
Every parallelogram has 2-fold
rotation symmetry.
2.
Parallelograms are not necessarily
reflection-symmetric (unless they are
a rectangle, rhombus, or square).
Example

Find x and y.
6x + 9
R
Y
2y
4
N
A
2–x
2 - x = 6x + 9
2 = 7x + 9
-7 = 7x
-1 = x
4 = 2y
2=y
Assignment
Do Master 7-7 B (skip 5c)

Do pages 408-409 8-13
Both due at the end of the hour.



1.
2.
Watch Space Station 3D
Answer the 2 questions on a half sheet and
turn in to Mr. Feldkamp.
What mini-experiments should we do on our
weightless flight? (i.e. slinky, gyro, top, other
toy…)
What question do you have about being in
zero G? What would you like to try if you
could do it?