After a reflection of the given triangle ABC across line segment BC, classify the triangle ACA' according to its side length. Recall classifying triangles by their side lengths would be naming the triangle a scalene, an isosceles, or an equilateral triangle.

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.