Ergebnisse (Kreis):

  1.  
    1. (x - 3)² + (y - 2)² = 25
    2. (x + 2)² + (y - 4)² = 9
    3. (x - 3)² + (y + 1)² = 10
    4. (x + 2)² + (y + 2)² = 58
    5. (x - 5)² + (y - 10)² = 13
    6. (x - 4)² + (y - 2)² = 16
    7. (x - 5)² + (y + 3)² = 9
    8. (x + 3)² + (y + 4)² = 25

  2.  
    1. M(2/4), r = 4
    2. M(5/-3), r = 6
    3. M(-5/1), r = 6
    4. M(-3/0), r = 5
    5. M(0/6), r = 4
    6. M(0/10), r = 9
    7. M(2,5 / -5), r = √31,25
    8. M(1,5 / 2,5), r = √12,5

  3.  
    1. x + 3y = 10
    2. -2x + y = 10
    3. 3x + 4y = 39
    4. x = 5
    5. -x + 7y = 24
    6. 2x - y = 0
    7. 3x + 4y = -16
    8. 5x + 12y = 99

  4.  
    1. S1(-5/-5), S2(-1/7), φ = 63,4°
    2. S1(-5/0), S2(3/4),φ = 63,4°
    3. S1(-7/1), S2(1/7), φ = 45°
    4. S1(2/1), S2(4/7), φ = 45°
    5. S1,2(-2/4),φ = 0° (Tangente)
    6. S1(-2/4), S2(7/7), φ = 71,6°
    7. S1(-1/1), S2(1/5), φ = 45°
    8. S1(4/2), S2(10/-4), φ = 90°

  5.  
    1. S1(-1/-2), S2(1/4), S1S2 = 6,32
      t1: 2x + y = -4, t2: x - 2y = -7
      S3(-3/2), φ = 90°, A = 10
    2. S1(-2/7), S2(6/3), S1S2 = 8,94
      t1: -3x + 4y = 34, t2: x = 6
      S3(6/13), φ = 53,13°, A = 40
    3. S1(3/1), S2(5/7), S1S2 = 6,32
      t1: x - y = 2, t2: 7x + y = 42
      S3(5,5/3,5), φ = 126,87°, A = 5

  6.  
    1. S1,2(3/±4), φ = 81,9°
    2. S1,2(±2,4/3,2), φ = 90°
    3. S1,2(-3/±12), φ = 59,5°
    4. S1(2/6), S2(6/2), φ = 71,6°

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