Hi there! My name is Zalgo and I am here to help you out today. A 43 degree angle is classified as an "acute angle". An Acute Angle is any angle under 90 degrees. A Right Angle is any angle at 90 degrees and an Obtuse Angle is any angle over 90 degrees. There is a 4th angle, but most teachers don't go over it and it isn't too important, so I see why, but it is called a Straight Angle. It is any angle that is 180 degrees.
I hope that this helps! :D
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A 40 degree angle: go from the right positive side of the x-axis and go left (left is positive degrees) forty degrees, which is a little less than halfway in quadrant 1.
