Graph the image of the given triangle, reflected across the y-axis. select the polygon tool. then, click the points of the triangle vertices to create the triangle by connecting the sides. solve for x. enter your answer in the box.

1) We are given a hexagon there.

Sum of all angles of a hexagon is 720.

Therefore, sum of all angles inside pentagon =720.

We can step an equation as

x+100+102+108+121 = 720.

Adding 100+102+108+121, we get 431.

Therefore,

x+431 = 720.

Subtracting 431 from both sides, we get

x+431-431 = 720-431

x=289.

Therefore, measure of unknown angle x= 289 degrees.

2) Coordinates of the vertices of the given triangle

(-2,-9)

(7,-4)

(9,-7).

We need to graph the reflected triangle across the y-axis.

For reflected triangle across the y-axis we can apply rule

(x,y) --> (-x,y)

By applying above rule, we get the coordinates of reflected triangle as

(-2,-9)  --> (2,-9)

(7,-4)   --> (-7,-4)

(9,-7)   --> (-9,-7).

Now, we can plot those coordinates on the graph and join the coordinates to form a triangle.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.