Question

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Answer 1

Step-by-step explanation:

As we know the angle at mid is a right angle.

So it is 90⁰.

$(x + 2x + 90) {}^{0} \\ 3x + 90 = 180 \\ 3x = 180 - 90 \\ 3x = 90 {}^{0} \\ x = 30$

Answer 2

Answer:

Since the sum of all angles of triangle = 180

And since this is a right - angled triangle

2x + x + 90 = 180

3x + 90 = 180

3x = 180 - 90

3x = 90

x = 90/3

x = 30°

Answer = 30°