Find the surface area of the prism. Enter your answer in the box. 12 m 3 m 6 m
2 answers:
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Given:
The figure of a triangle DEF.
To find:
The coordinate of image of given triangle after reflection over y-axis.
Solution:
The vertices of given triangle are D(1,4), E(4,3), F(2,0).
If a figure is reflected over the y-axis, then the rule of reflection is
Using this rule, we get
Therefore, the coordinates of image are D'(-1,4), E'(-4,3) and F'(-2,0).
Answer:
-11
Step-by-step explanation:
Given
Use properties:
Thus,