Congruence via Rigid Motions
Geometry · Flashcards · Application
GEOMETRY · FLASHCARDS
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QUESTION
Identify whether the mapping preserves orientation:
(
x
,
y
)
→
(
x
,
−
y
)
\left(x,y\right)\to\left(x,-y\right)
(
x
,
y
)
→
(
x
,
−
y
)
.
QUESTION
Identify whether the mapping preserves orientation:
(
x
,
y
)
→
(
x
+
2
,
y
−
3
)
\left(x,y\right)\to\left(x+2,y-3\right)
(
x
,
y
)
→
(
x
+
2
,
y
−
3
)
.
QUESTION
What is the image of
(
−
6
,
2
)
\left(-6,2\right)
(
−
6
,
2
)
after a
180
∘
180^\circ
18
0
∘
rotation about the origin?
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ANSWER
(
6
,
−
2
)
\left(6,-2\right)
(
6
,
−
2
)
. Both coordinates change sign for
180
°
180°
180°
rotation.
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