There are three possible results when a plan intersects with a three-dimensional figure and these are:
a point
a line
a plane
The first step in describing the result is to determine first how the plane and the figure intersects.
Answer:
Step-by-step explanation:
because <u>c</u> is shorter than<u> a</u> we know C is a smaller angle than A
so the first choice is out.
use the law of cosines to find b
= 
=1681+400-1326.787871
= 754.21219
b= 
b= 27.46292
so the last choice looks good
Point D (-2,-6)>>(x,-y)>> Point D’(-2,6)
Point D’ (-2,6)>> (-x,y)>> Point D’’(2,6)
20, 10 line segments each with 2 ends = 20