Which shows two triangles that are congruent by aas?

a, b, c, or d

(A) shows two triangles that are congruent by AAS.

Explanation:-

AAS (Angle-Angle-Side) postulate states that if two angles and the non-included side one triangle are equal to the two angles and the non-included side of the another triangle, then the two triangles are said to be congruent.

In figure A we have two angles and the non-included side one triangle are equal to the two angles and the non-included side of the next triangle attached to it ,thus by AAS postulate they are congruent.

Rest of the other figures do not have two angles equal in both the triangles.

Thus only A shows two triangles that are congruent by AAS.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have