Answer:
68°
Explanation:
a triangle hold 180° so 180-43=137 and G and H are almost the same value where G is 69° and H is 68°
x°+43°+(x-1)°=180°(sum of all the interior angle of triangle is 180°
2x°+42°=180°
2x°=180°-42°
2x°=138°
x=138°/2°
:. x=69°
Now,
angle H= (x-1)°=69°-1°=68°
:. angle H= 68°
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