Constructing Inscribed and Circumscribed Circles
Geometry · Flashcards
GEOMETRY · FLASHCARDS
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QUESTION
What is the circumradius of a triangle?
QUESTION
If
A
B
C
D
ABCD
A
B
C
D
is cyclic and
m
∠
D
=
103
∘
m\angle D = 103^\circ
m
∠
D
=
10
3
∘
, what is
m
∠
B
m\angle B
m
∠
B
?
QUESTION
If an incircle touches side
A
B
‾
\overline{AB}
A
B
at
T
T
T
, what is the angle between
I
T
IT
I
T
and
A
B
‾
\overline{AB}
A
B
?
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ANSWER
90
∘
90^\circ
9
0
∘
. Radius to tangency point is perpendicular to the side.
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