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apologiabiology

angle 2=90 degrees
angle3=angle1
x+angle1=90 degrees

so

x=34

34+angle1=90
minus 34 both sides
angle1=56 degrees=angle3


angle1=56°
angle2=90°
angle3=56°

JoshEast

If x = 34°

then ∡ 1 = 90° - 34°
               = 56° (since the sum of the angles of a right angle is 90°)
        
        ∡ 3 = 180° - (90° + x)
              =  180° - (90° + 34°)
              = 56°  (since angles on a straight line add up to 180°)
     
       ∡ 2 = 90° (since the angle opposite to it is 90°)
 


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