How would you describe your understanding of the relationship between two-and three dimensional figures? O I can describe the relationship between a base shape and its solid. I can also draw the base plan, isometric view, and side views for 3-D figures.
O I can usually match base shapes with their solids. I can draw at least two views of a 3-D figure.
O I can usually match base shapes with their prisms. I have some trouble drawing 3-D figures.
O I need help better understanding 2-D and 3-D figures.

is only a line? i think so

c

-by-step explanation:

it would be c

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.