Final answer:
When constructing a new triangle using two angles and the included side from an original triangle, the two triangles are congruent in size and shape by the Angle-Side-Angle (ASA) Postulate.
Step-by-step explanation:
When you create a new triangle on the grid by drawing a line segment equal in length to the one from the original triangle and then constructing angles at each endpoint with the same measurements as those recorded from the original triangle, what you end up with are two triangles of the same size and shape. This is because when two triangles have two angles and the included side between them that are congruent, they are considered to be congruent by the Angle-Side-Angle (ASA) Postulate. Therefore, the correct answer to the question is:
A) The two triangles are congruent in size and shape.
By constructing the triangles this way, you are effectively repeating the same measurements and angle sizes, which ensures that both triangles will be identical. This property of congruence is a fundamental aspect of triangle geometry.