__can be shown to be congruent by a sequence of reflections and translations.___ can be shown to be congruent by a single rotation. PLEASE FILL IN THE BLANKS

In the diagram below what is the approximate length of the minor arc ab

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?