c2 = a2 + b2

c2 = a2 + b2 is the third of 5 stages in Summer Lesson (Event Stages). Boss: Teacher A. Other enemies include Gary Gory, Sir Seal, B.B.Bunny, and Those Guys.

Stage details

Difficulty
★4
Energy
100
XP
8,930
Base HP
75,000
Length
4,600
Max enemies
10

Rewards

  • Lucky Ticket ×2 · 100% chance · once only
  • Lucky Ticket ×2 · 30% chance
  • Lucky Ticket · 70% chance

Enemies

RedTraitless
  1. From the start
  2. At the start, Forever, every 10–16.7s
    HP
    400
    Damage
    40
    DPS
    40
    Range
    110
  3. At 10s, Forever, every 70–73.3s
    HP
    1,000
    Damage
    100
    DPS
    73
    Range
    110
  4. At 11.7s, Forever, every 70–73.3s
    HP
    1,000
    Damage
    100
    DPS
    73
    Range
    110
  5. At 13.3s, Forever, every 70–73.3s
    HP
    1,000
    Damage
    100
    DPS
    73
    Range
    110
  6. At 30s, Forever, every 83.3–86.7s
    HP
    5,000
    Damage
    300
    DPS
    391
    Range
    170
  7. At 66.7s, Forever, every 16.7–33.3s
    HP
    400
    Damage
    40
    DPS
    40
    Range
    110
  8. When the base drops to 99%
  9. Teacher ABoss100%Traitless
    Instantly
    HP
    40,000
    Damage
    657
    DPS
    821
    Range
    351
  10. Instantly, 7 total, every 13.3–15.3s
    HP
    18,000
    Damage
    750
    DPS
    1,406
    Range
    160

Like most stages, this one also sends a Ms. Sign if the battle goes past 15 minutes.