Ch. 8.4 Angles of elevation and depression
The angle of ELEVATION is the angle between the
horizontal and the line of sight to an object
line
of
sight
Horizontal line
The angle of ELEVATION is the angle between the
horizontal and the line of sight to an object
line
of
sight
?
Horizontal line
?
The angle of ELEVATION is the angle between the
horizontal and the line of sight to an object
1
line
of
sight
2
angle 1
angle 2
 both angles
Which is the
angle of elevation?
Horizontal line
Click
OK
The angle of DEPRESSION is the angle between the
horizontal and the line of sight to an object
horizontal
The angle of DEPRESSION is the angle between the
horizontal and the line of sight to an object
line
of sight
?
horizontal
?
Click the angle of depression
k
k
k
k
horizontal
 sight
horizontal
depression
elevation
The blue
line is
the line of
In this diagram,

The angles
of elevation
and depression
are ALTERNATE
INTERIOR angles.

Therefore, they
have


(5 letter word)
angle measures
line of sight
?
Horizontal
?
angle of depression
?
angle of elevation
?
Horizontal
The angles of elevation
and depression can
use the same
horizontal line:
Click OK
The angles of elevation
and depression can
use the same
horizontal line:
Click the angle of
elevation
d
d
r
d
The angles of elevation
and depression can
use the same
horizontal line:
Click the angle of
depression
d
d
r
d
The angle of
depression is
angle (lower case)
The angle of
elevation is
angle (lower case)
If angle x is 50°,
angle y is:
°
The mustard-colored line is the
line of
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