Question

4.3.4 parts a,b,c

4.3.4. (a) In the Poincaré model using the unit circle graph the Saccheri quadrilateral de- scribed as follows. The base is on y 0, the two sides are on [x(5/3)] +y (4/3)2, and the summit is on x2 + [y (5/3)]?- (4/3). Explain why the sides are perpendicular to the base. Why can you expect the sides to be congruent? Verify visually that the summit angles are acute. (b) In the half plane model, graph the Saccheri quadrilaterals described as follows. The base is onyT0x, the two sides are on y 7.512.5)y, and the summit is on y 7-x.Explain why the sides are perpendicular to the base. Why can you expect the sides to be congruent? Verify visually that the summit angles are acute. (c) Repeat part (b), replacing the equation for the summit with y.For which part of the problem are the summit angles most clearly acute?

Answer 1

ent fom' excitation4h pstu la te Surmtt aglesw be acute urnm