Atriangle has sides with lengths of 11 feet,15 feet, and 17 feet. is it a right triangle?

First to find out if this is a right triangle you will setup the equation with a+b=c

11^2+15^2?17^2

first do exponents(11 x 11, 15 x 15, and 17 x 17)

121+225?289

Now add 121 and 225

346?289

now decide whether 346 is equal to 289?

No they are not equal meaning the triangle is not equal.

NO it is not a right triangle

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.