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Marizza181 [45]
3 years ago
11

What set of Reflections and rotations could carry ABCD onto itself?​

Mathematics
2 answers:
Nitella [24]3 years ago
6 0

Reflect over y-axis,reflect over the X axis ,rotate 180°

Option D is the correct option.

<em>Expla</em><em>nation</em><em>:</em>

<em>Let's </em><em>take</em><em> </em><em>point</em><em> </em><em>A</em><em> </em><em>which </em><em>is</em><em> </em><em>(</em><em>4</em><em>,</em><em>-</em><em>1</em><em>)</em>

<em>Reflect</em><em>ion</em><em> </em><em>over</em><em> </em><em>y-</em><em> </em><em>axis </em><em>will</em><em> </em><em>make</em><em> </em><em>this</em><em> </em><em>point</em><em> </em><em>(</em><em>4</em><em>,</em><em>1</em><em>)</em>

<em>Then</em><em>,</em><em> </em><em>reflect</em><em>ion</em><em> </em><em>over</em><em> </em><em>X </em><em>axis</em><em> </em><em>will</em><em> </em><em>make</em><em> </em><em>this</em><em> </em><em>point </em><em>(</em><em>4</em><em>,</em><em>-</em><em>1</em><em>)</em>

<em>After</em><em> </em><em>rota</em><em>tion</em><em> </em><em>of</em><em> </em><em>1</em><em>8</em><em>0</em><em> </em><em>degree</em><em> </em><em>we</em><em> </em><em>will</em><em> </em><em>get</em><em> </em><em>(</em><em>-</em><em>4</em><em>,</em><em>1</em><em>)</em><em> </em><em>.</em>

<em>Please</em><em> </em><em>see</em><em> the</em><em> attached</em><em> picture</em><em>.</em><em>.</em><em>.</em><em>.</em>

<em>Hope</em><em> </em><em>it </em><em>helps</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em><em>.</em>

AURORKA [14]3 years ago
4 0

Answer:  d) reflect over the x-axis, reflect over y-axis, rotate 180°

<u>Step-by-step explanation:</u>

A reflection over the x-axis and a reflection over the y-axis is the SAME as a rotation of 180°. Together they make a rotation of 360°, which results in the image staying at the same place.

Reflection over the x-axis changes the sign of the y-coordinate

Z = (x, y)    →    Z' = (x, -y)

Reflection over the y-axis changes the sign of the x-coordinate

Z' = (x, -y)    →    Z'' = (-x, -y)

Rotation of 180° changes the signs of both the x- and y-coordinates

Z'' = (-x, -y)   →     Z''' = (x, y)

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