How to find length of a line - ISEE Lower Level Quantitative Reasoning
Card 0 of 6
On a number line, what is the length of a line that stretches from 
to 
?
On a number line, what is the length of a line that stretches from
is 
units to the left of zero on the number line. 
is 
units to the right of zero on the number line.
The length of the line would then be 
.
The length of the line would then be
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If the radius of a circle is equal to 
, then what is the value of the diameter?
If the radius of a circle is equal to
The length of a dimater is twice the length of the radius. Given that the length of the radius is 
, the dimater will be equal to 
.
The length of a dimater is twice the length of the radius. Given that the length of the radius is
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The length of 
is 
and the length of 
is 
.
What is the length of 
in terms of 
and 
?
The length of
What is the length of
Using the segment addition postulate, we know that 
. We can substitute 
and 
for 
and 
and solve for 
.
Substitute: 
Subtract y from both sides: 
Simplify: 
Using the segment addition postulate, we know that
Substitute:
Subtract y from both sides:
Simplify:
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The length of BC is x and the length of CE is y.
What is the length of segment 
?
The length of BC is x and the length of CE is y.
What is the length of segment
Segments 
and 
make up segment 
. Using the segment addition postulate, add the lengths of 
and 
to find the length of 
.
Substitute 
and 
: 
Segments
Substitute
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The length of 
is 
and the length of 
is 
.
What is the length of segment 
?
The length of
What is the length of segment
Using the segment addition postulate, we know that 
. We can substitute 
and 
for 
and 
and solve for 
.
Substitute: 
Subtract y from both sides: 
Simplify: 
Using the segment addition postulate, we know that
Substitute:
Subtract y from both sides:
Simplify:
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The length of 
is 
and the length of 
is 
.
What is the length of segment 
in terms of 
and 
?
The length of
What is the length of segment
Segments 
and 
make up segment 
. Using the segment addition postulate, add the lengths of 
and 
to find the length of 
.
Substitute 
and 
: 
Segments
Substitute
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