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Inscribed angle theorem visualised
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129
First rotation: B -> A
First rotation: B -> A
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57
Second rotation: move triangle outside
Second rotation: move triangle outside
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63
Flip first outside triangle
Flip first outside triangle
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70
Translate copy of outside triangle
Translate copy of outside triangle
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81
Point to three angles adding up to 180
Point to three angles adding up to 180
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88
Angle wedge markers
Angle wedge markers
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93
Highlight right-angle, radius and tangent line
Highlight right-angle, radius and tangent line
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106
Point to blue angle remaining constant
Point to blue angle remaining constant
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119
Highlight constant red-green wedge
Highlight constant red-green wedge
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130
Arrows pointing at red and green arcs
Arrows pointing at red and green arcs
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150
Show that red+green is also the angle at peak of triangle
Show that red+green is also the angle at peak of triangle
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157
163
powered by
powered by
Inscribe a triangle inside the circle.
Angle at the peak stays constant as peak moves.
"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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