this is computer engineering drawing, please fill in the blank spaces

2. Fill in the blanks (9 questions in total, 1 point for each blank, 30 points in total) 1. Write out the coordinates of each point relative to the previous peint from left to right according to the dimensions in the figure below Point A: _point B:_point C:_point D_ 2. Write the snap codes of the following points. Endpoint:_intersection:_Center: tangent:_ Quadrant_ 3. Fill in the necessary parameters on the horizontal line to complete the drawing of BC, CD and DB lines in the figure below Command Line specifies the first point: From // use orthogonal offset snap Base point: int // snap intersection a