Step-by-step explanation:STEP 1: Draw two straight, intersecting tangent lines onto the circle. The lines can be completely random. However, the process will be easier if you make them roughly square or rectangular.
STEP 2: Translate both of the lines to the other side of the circle. You will end up with four tangent lines forming a parallelogram or a rough rectangle.
STEP 3: Draw the diagonals of the parallelogram. The point where these diagonal lines intersect is the circle's center.
STEP 4: Check the accuracy of the center with a compass. The center should be on target as long as you didn't slip while translating the lines or when drawing the diagonals. Feel free to erase the parallelogram and diagonal lines.
Answer:

Step-by-step explanation:
Given


Required
Find y when 
We have:

Express as equation

Solve for k

When 


When
, we have:



Answer:

Step-by-step explanation:
1/2
Answer:
1. 6 faces
2. 9 edges
3. 10 vertices
4. 6 faces
5. 10 edges
6. 7 vertices
Step-by-step explanation:
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