P
1)
45°
(3x + 16)
68°
R
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Answered by
20
Answer:
3x+16+68°+45°= 180°
3x+129°= 180°
3x= 180°-129°
3x= 51°
x= 51/3
x= 17°
Answered by
4
Answer:
angle sum property of a triangle
3x+16 + 45 degree +68degree=180degree
3x+129 degree =180 degree
3x=180-129
3x=51
x=51/3
x=17
3×17+16
67 degree
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