Fill in the Blank 1 point How many sets of congruent angles are needed to prove that 2 triangles are similar? It takes at least type your answer... sets of congruent angles.

To prove that two triangles are similar, it takes at least two sets of congruent angles. This is based on the Angle-Angle (AA) similarity postulate, which states that if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar. In practice, this means that you can determine whether triangles are similar just by looking at their angles. For example, if you're working with the angles of a triangle that have been highlighted in a geometry problem, as long as you identify two pairs that match in measure, you're all set to declare those triangles similar!