Question

If the relationship a2 + b2 = c2 applies to triangle ABC, angle C is a staright angle. If not the connection, angle C is not a straight angle. In a green area, lines have been drawn up for training plans. Show which of the u, v, x and y angles have not managed to get right.

Answer 1

44^2  is not equal to 20^2 + 40^2
Thus angles u and v are not right angles