Question

calculate the size of the unmarked angle
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Answer 1

Answer:

Here is answer

Step-by-step explanation:

Let the unmarked angle be x.

45°+75°+x=180° (Sum of all angles of triangle is 180° )

120° + x=180°

x = 180° - 120°

x = 60°

The unmarked angle is 60°.

Hope it will help you