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DAE = 50° ⇒ AED = X = 70°
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Expression 15: "y" equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis
y
=
m
2
x
−
A
1
15
Expression 16: "m" Subscript, 1 , Baseline "B" Subscript, 1 , Baseline tilde "m" Subscript, 2 , Baseline left parenthesis, "B" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis
m
1
B
1
~
m
2
B
1
−
A
1
16
Expression 17: "B" Subscript, 2 , Baseline equals "m" Subscript, 2 , Baseline left parenthesis, "B" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis
B
2
=
m
2
B
1
−
A
1
equals
=
4.6 0 8 0 2 4 9 2 5 5 3
4
.
6
0
8
0
2
4
9
2
5
5
3
17
Expression 18: "C" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline minus left parenthesis, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis
C
1
=
B
1
−
D
1
−
B
1
equals
=
negative 5.3 2 0 8 8 8 8 6 2 3 8
−
5
.
3
2
0
8
8
8
8
6
2
3
8
18
Expression 19: "C" Subscript, 2 , Baseline equals "D" Subscript, 2 , Baseline
C
2
=
D
2
equals
=
0
0
19
Expression 20: "m" Subscript, 3 , Baseline equals tangent "D" Subscript, "A" "E" , Baseline
m
3
=
t
a
n
D
A
E
equals
=
1.1 9 1 7 5 3 5 9 2 5 9
1
.
1
9
1
7
5
3
5
9
2
5
9
20
Expression 21: "y" equals "m" Subscript, 1 , Baseline "x"
y
=
m
1
x
21
Expression 22: "y" equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis
y
=
m
3
x
−
A
1
22
Expression 23: "m" Subscript, 1 , Baseline "E" Subscript, 1 , Baseline tilde "m" Subscript, 3 , Baseline left parenthesis, "E" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis
m
1
E
1
~
m
3
E
1
−
A
1
23
Expression 24: "E" Subscript, 2 , Baseline equals "m" Subscript, 3 , Baseline left parenthesis, "E" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis
E
2
=
m
3
E
1
−
A
1
equals
=
negative 7.0 5 9 9 0 3 7 7 5 9 2
−
7
.
0
5
9
9
0
3
7
7
5
9
2
24
Graphs
Graphs
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25
Expression 26: polygon left parenthesis, "B" , "C" , "D" , right parenthesis
p
o
l
y
g
o
n
B
,
C
,
D
26
Expression 27: polygon left parenthesis, "A" , "B" , "C" , "D" , "E" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
,
D
,
E
27
Expression 28: polygon left parenthesis, "A" , "D" , right parenthesis
p
o
l
y
g
o
n
A
,
D
28
Expression 29: polygon left parenthesis, "B" , "D" , right parenthesis
p
o
l
y
g
o
n
B
,
D
29
Points
Points
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30
42
powered by
powered by
A
B
C
D
E
20°
70°
50°
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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