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    Q7 Q7 Presentation Transcript

      • Find ∠ x
      © mathsheuristics 
      • Find ∠ x
      © mathsheuristics  60°
      • AC = BD
      • BCD is equilateral 
      •  DCB = 60°
      1
      • Find ∠ x
      © mathsheuristics 
      • AC = BD
      • BCD is equilateral 
      •  DCB = 60°
      60°  DCA  60°÷ 2 = 30° 30° 1 2
      • Find ∠ x
      © mathsheuristics 
      • AC = BD
      • BCD is equilateral 
      •  DCB = 60°
      60°  DCA  60°÷ 2 = 30° 30°
      • ACD is issoc 
      •  CDA  (180° – 30°)÷ 2 = 75°
      75° 1 2 3
      • Find ∠ x
      © mathsheuristics 
      • AC = BD
      • BCD is equilateral 
      •  DCB = 60°
      60°  DCA  60°÷ 2 = 30° 30°
      • ACD is issoc 
      •  CDA  (180° – 30°)÷ 2 = 75°
      75°  ADB  180°– 75° – 30° = 75° 1 2 3 4
      • Find ∠ x
      © mathsheuristics 
      • AC = BD
      • BCD is equilateral 
      •  DCB = 60°
      60°  DCA  60°÷ 2 = 30° 30°
      • ACD is issoc 
      •  CDA  (180° – 30°)÷ 2 = 75°
      75°  ADB  180°– 75° – 30° = 75°  x  75° x 2 = 150° Ans 150° 1 2 3 4 5