- Start at the "START!" box.
- Solve for x in the pentagon: 109° + 94° + 71° + 92° + 3x° = 540° → x = 58.
- Follow the path labeled 58 to the next polygon (hexagon).
- Solve for x in the hexagon: 50° + 40° + 55° + 45° + 30° + 2x° = 720° → x = 250.
- Follow the path labeled 250 to the next polygon (pentagon with expressions).
- Solve for x: (9x+4)° + (9x+1)° + 10x° + 5x° + 5x° = 540° → x = 13.
- Follow the path labeled 13 to the next polygon (quadrilateral).
- Solve for x: 7x° + (3x+5)° + (5x+3)° + 2x° = 360° → x = 20.
- Follow the path labeled 20 to the next polygon (pentagon with mixed angles).
- Solve for x: 70° + x° + 103° + 67° + 42° = 540° → x = 258.
- Follow the path labeled 258 to the next polygon (quadrilateral with expressions).
- Solve for x: (5x-5)° + (6x+5)° + (3x+1)° + (8x-1)° = 360° → x = 16.
- Follow the path labeled 16 to the "FINISH!" box.
Parent Tip: Review the logic above to help your child master the concept of interior and exterior angles of polygons worksheet key.
