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Proof that ∠ ACE = ∠ BCE
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Expression 18: "A" Subscript, 1 , Baseline equals StartRoot, 0 , EndRoot equals 0
A
1
=
0
equals
=
0
0
18
Expression 19: "A" Subscript, 2 , Baseline equals StartRoot, 0 , EndRoot equals 0
A
2
=
0
equals
=
0
0
19
Expression 20: "C" Subscript, 1 , Baseline equals StartFraction, "D" Subscript, 1 , Baseline Over 2 , EndFraction
C
1
=
D
1
2
equals
=
4.9 4 8
4
.
9
4
8
20
Expression 21: "D" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0
D
2
=
A
2
equals
=
0
0
21
Expression 22: "E" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline
E
1
=
C
1
equals
=
4.9 4 8
4
.
9
4
8
22
Expression 23: "E" Subscript, 2 , Baseline equals StartFraction, "C" Subscript, 2 , Baseline Over 3 , EndFraction
E
2
=
C
2
3
equals
=
1.1 2 5 3 3 3 3 3 3 3 3
1
.
1
2
5
3
3
3
3
3
3
3
3
23
Expression 24: "F" Subscript, 1 , Baseline equals StartFraction, 3 "C" Subscript, 1 , Baseline Over 2 , EndFraction
F
1
=
3
C
1
2
equals
=
7.4 2 2
7
.
4
2
2
24
Expression 25: "F" Subscript, 2 , Baseline equals StartFraction, "C" Subscript, 2 , Baseline Over 2 , EndFraction
F
2
=
C
2
2
equals
=
1.6 8 8
1
.
6
8
8
25
Graphs
Graphs
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26
Expression 27: "y" less than 30
y
<
3
0
27
Hidden Label: "A" , "D"
A
,
D
Label
equals
=
left parenthesis, 0 , 0 , right parenthesis
0
,
0
left parenthesis, 9.8 9 6 , 0 , right parenthesis
9
.
8
9
6
,
0
28
Expression 29: polygon left parenthesis, "A" , "F" , "A" , "B" , "C" , "E" , "D" , "E" , "C" , right parenthesis
p
o
l
y
g
o
n
A
,
F
,
A
,
B
,
C
,
E
,
D
,
E
,
C
29
Points
Points
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30
44
powered by
powered by
A
B
C
F
D
E
AC = BD
AB ∥ DE
||
||
"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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