Segment CD
This is because where there is a perpendicular line, there has to be a right angle(90degrees) at the point of contact.
Answer:
we cant see the triangles
Step-by-step explanation:
Answer:

Step-by-step explanation:
The area
of a triangle is equal to half the product of its length (L) because of its height (h).

The base of the triangles is 
The height of the triangles is 
Then the area of one of the triangles is:

The figure is formed by 12 equal triangles, then the area of the figure
is:

3(2x)=4x+4
do the bracket first
(3)(2x)= 6x
6x= 4x+4
move 4x to the other side
sign changes from +4x to -4x
6x-4x=4x-4x+4
6x-4x= 4
2x= 4
divide by 2
2x/2=4/2
x=2
Answer: x= 2
How is anyone supposed to help with this?