The answer is D ACD=DBA
reasoning:
*It because the triangle is just reflected
*The side A (first triangle) is the same side as side D (triangle 2) this being because there is no angle coloring on both.
*The side B (first triangle) is the same side as side C (triangle 2) this being because the angle is highlighted in blue on both and is the same degree (the coloring hinting on this).
*The side D (first triangle) is the same side as side A (triangle 2) this being because the angle is highlighted in red on both and is the same degree (the coloring hinting this).
