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:

Step-by-step explanation:

Square root can be written as a power.

Multiply the exponents.

Answer:
A≈530.93in²
Step-by-step explanation:
Answer: 10
Step-by-step explanation:
So to find range you take the highest number and subtract it by the lowest
It is an acute triangle since all the sides are less than 90 degrees (it's also equilateral)