A. As sun peeks, it creates a straight line- sun to tree to shadow, angle=180° b. During morning, the sun-tree-shadow changes from 180° to 90°, during noon, angle =90°.During sunset the angle changes from 90 to 0°. c. Acute angles created in afternoon. d. A right angle would be created at noon. e. Obtuse angle would be created in morning. f. Yes, a straight angle would be created at sunrise. g. When sun is at mid-morning, the angle=45°+90°= 135°
