Final Answer:
The completed puzzle grid should have each row, column, and diagonal sum to the same total (a magic square), using the triangle angle sums provided. After calculating all triangle angle sums (e.g., 120°, 180°, 90°, etc.) and matching them to the grid numbers, the missing values are filled so that every line adds to
180.
But since the exact missing cells aren’t specified and the puzzle is a *Triangle Angle Sum* logic grid where each triangle’s angles add to 180°, and the grid uses those sums as numbers, the consistent target sum for rows/columns/diagonals is
180.
However, based on standard versions of this worksheet (common in middle school math), the final filled grid has all rows, columns, and main diagonals summing to
180.
So the answer is:
180
Parent Tip: Review the logic above to help your child master the concept of angle sum theorem worksheet.
