1. The problem is to write a triangle congruency statement for triangles ABC and XYZ. 2. The notation for a triangle is \triangle followed by the vertices in order, for example, \triangle ABC. 3. To write the congruency statement between two triangles, use \cong(\triangle ABC, \triangle XYZ). 4. This means \triangle ABC \cong \triangle XYZ, which states that triangle ABC is congruent to triangle XYZ. 5. In the text entry box, type exactly: cong(triangle(ABC), triangle(XYZ)) to get the congruency statement. 6. This notation uses the function cong() for congruency and triangle() for the triangle with vertices inside the parentheses. 7. Make sure to include commas and parentheses exactly as shown for the system to recognize the statement correctly.