today in geometry… stats on algebra review quiz warm up: geometry notation review calculating...
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TODAY IN GEOMETRY…
Stats on Algebra Review Quiz Warm Up: Geometry Notation Review Calculating MidpointLearning Goal: 1.3 Calculating
distance between two points Independent Practice – NO A.T.Return Algebra Review Quiz1.1-1.3 QUIZ-Friday
HOW DID YOU “SHAPE” UP??Results for ALL of my Geometry classes:
GRADE NUMBER OF STUDENTS WHO TOOK THE ALG. REVIEW QUIZ (14 pts.)
1ST PERIOD 3RD PERIOD 5TH PERIOD 6TH PERIOD TOTAL
A 14 11 13 15 53B 5 9 6 4 24C 1 4 4 2 11D 5 1 0 1 7F 4 3 0 4 11
29 28 23 26 105
1.
2.
3.
WARM UP: Match the correct notation to each of the figures.
𝐴
𝐵
𝐷 𝐸
𝐹
𝐺
a. h.
b. i.
c. j.
d. k.
e. l.
f. m.
g. n.
C
K
i
REVIEW: Midpoint Formula
Use the midpoint formula Substitute known values
Add
Simplify
REVIEW: Find the midpoint between A and B.
REVIEW: Find the midpoint between A and B.
(−6 ,4 )
(7 ,−2)
𝐴
𝐵
Midpoint Formula:
𝑀
(,)7+4MA B
(3 ,−2) (7 ,2)
+4
+4
+4
+4
𝑩(𝟏𝟏 ,𝟔)
PRACTICE: Given an endpoint and the midpoint , find the second endpoint.
2+4
DISTANCE: The length between two points. Distance can never be negative!
EXAMPLE:
The distance between points A and B is 11.
𝐴 𝐵
11
DISTANCE FORMULA: Given two points
Finding distance given:A GRAPH
PRACTICE: Find the distance of AB.
𝐴
𝐵
10 𝑨𝑩=𝟏𝟎
PRACTICE: Find the distance of CD.
𝐶
𝐷
10
8
a
b
d
Distance Formula:
PRACTICE: Find the distance of CD.
𝐶
𝐷
6
7
a
b
d
Distance Formula:
PRACTICE: Find the distance of EF.
𝐸
𝐹
3
4
a
b
d
Distance Formula:
Finding distance given:TWO POINTS
PRACTICE: Find the distance of AB given the two points
Distance Formula Substitute known values
Subtract
Square
Add
𝑥1 𝑦1 𝑥2 𝑦2
+¿
PRACTICE: Find the length of AC given the two points
Distance Formula Substitute known values
Subtract
Square
Add
𝑥1 𝑦1 𝑥2 𝑦2
¿5
PRACTICE: Find the length of RS given the two points
Distance Formula Substitute known values
Subtract
Square
Add
𝑥1 𝑦1 𝑥2 𝑦2
HOMEWORK #4:
Pg. 20: 31-34, 43-45, 50-52
REMINDER: turn in your Student Acknowledgment and Agreement Form!
If finished, work on other assignments:
HW #1: Pg. 5: 1, 5, 8-11, 13, 15, 17-21, 27-30, 46HW #2: Pg. 12: 6-16, 21-28, 33, 35HW #3: Pg. 19: 5-19, 25-27