Download linear measurement

1-2 DAY 1
Linear Measurement
Bellringer
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What is ¾ + 5/6 ?
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Unlike a line, a line segment, can be measured
because it has two endpoints.
A segment with endpoints A and B can be name AB
or BA.
The length or measure of AB is written AB.
Introduction to measurement
Inches
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Centimeters
A standard ruler
Challenge…
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With your shoulder partner, find something in the
room that is
A) 5 38 inches
B) 3.7 cm
C) Measure the length of Partner A’s pencil/pen in
inches
D)Measure the length of Partner B’s pinky finger in
centimeters
Segment Addition Postulate
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If M is between P and Q, then PM+MQ=PQ
P

M

Q

Two segments having the same
measure are congruent (
)

Rally Coach
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Partners take turns, one solving a problem while the
other coaches.
1. Partner A solves the first problem.
2. Partner B watches and listens, checks, coaches if
necessary, and praises.
3. Partner B solves the next problem.
4. Partner A watches and listens, checks, coaches if
necessary, and praises.
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Partner A- Draw DE that is 3 1/16 inches long.
Partner B- Draw FG that is 2 ¾ inches long.
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Partner A, Find LM, if MN=2.6 cm and LN=4 cm.
L

M
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
N
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Partner B, Find LN, if
L

LM= 4
5
8
in and MN=2 ½ in.
M
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
N
Scribe and Sage
Find x and ST if T is between S and U,
ST=7x, SU=45, and TU=5x-3

U
5x-3

T
7x
45

S
Which of the following is/are true
statements?
I. If W is on AB , then A is on WB.
II. If W is on AB , then AW = WB.
III. If W is on AB , then AW + WB = AB
A. I only
B. II only
C. III only
D. II and III
E. I, II, and III
Find the value of the variable and KL if
K is between J and L
JK=6r, KL=3r, and JL=27
Do you know???
What are the three undefined
terms in geometry???
Find the value of the variable and KL if
K is between J and L
JK=2s, KL=s+2, and JL=5s-10
Summary:
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What measurement do the little lines on the inch
side of a ruler show?
How many divisions are there in a centimeter on a
ruler?
What does the angle addition postulate say?