Answer:
45°
Step-by-step explanation:
It is useful to have some idea what angles of different measures look like. The attachment may help you match the angle to an appropriate measure.
To me, it looks like a 45° angle.
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Of course, you can always use a protractor and measure it. Make sure your screen or printer does not distort the image. (Printable versions of protractors are available on-line.)
