Sled kites rely on wind pressure to retain the shape of the sail...

Question

...Each consists of a single square and two triangular pieces. Kyle has made a model of a Sled kite as shown below. Show that the angles A and B are congruent.

Answer 1

Since the central portion of the diagram is stated to be a square, all its angles, including A and B, are congruent and equal to 90° by definition.