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He exercises for 18 minutes daily
Step-by-step explanation:
Angle G and Angle H are co interior angles hence they are supplementary
Angles LGH and LGB would be equal because bisector divides angle into 2 equal halves.
In the same way Angles LHD and GLH are also equal.
So let Angles LGH and LGB be' a' and 'a'
And angles LHD and GLH be 'b' and 'b 'respectively
So, a+a+b+b = 180
2a+2b = 180
2(a+b) = 180
a+b =180 ÷ 2
a + b = 90
If we observe a,b and x are in a triangle so by angle sum property they are all equal to 180
a+b+x = 180
90+x = 180
x = 180 - 90
x = 90
Minutes of exercise = x ÷ 5
= 90 ÷ 5
= 18 minutes