Determine the measures of the angles marked with letters

1) Now,

a + 27° = 90° (right angle triangle)

◆ a = 63°

2) Now,

b + b + b = 90° (right angle triangle)

or, 3b = 90°

◆b = 30°

3) Now,

c + c + 40° = 90° (right angle triangle)

or, 2c = 90° - 40°

or, c = 50°/2

◆ c = 25°

4) Here,

◆ e = 41° (vertically opposite angle)

◆ f = 82° ( vertically opposite angle)

Now,

d + e + f = 180° (straight angle)

or, d + 41° + 82° = 180°

or, d = 180° - 123°

◆ d = 57°

Then,

◆ g = d = 57° (vertically opposite angle)

It is all correct answer...

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