# Common Core: High School - Geometry : AA Criterion using Similarity Transformations: CCSS.Math.Content.HSG-SRT.A.3

## Example Questions

### Example Question #11 : Aa Criterion Using Similarity Transformations: Ccss.Math.Content.Hsg Srt.A.3

Are triangles A and C similar?

No

Yes

Yes

Explanation:

To determine whether triangles are similar recall what "similar" means and the AA criterion. To be "similar" triangles need to have congruent angles. Also recall that all triangles have interior angles that sum to 180 degrees.

Knowing this, look at triangle A.

Two angles are given and the third can be calculated.

Now, look at triangle C.

Since triangles A and C have the same angle measurements, they are considered to be similar. Therefore, the answer to the question is "yes".

### Example Question #142 : High School: Geometry

Determine whether the triangles are similar.

In triangle ABC, angle A measures 73 degrees. In triangle JKL, angle K measures 34 degrees.

The triangles are similar.

The triangles are not similar.