5. Judging by appearance, name an acute angle, an obtuse angle, and a right angle. E
G
D
H
c.
a.
ZE, ZG, 21
b. ZH, ZI, ZG
ZG, ZH, ZF
d. ZE, ZF, 21

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.