Course staff: Regenerate your assessment instance to pick up changes to the assessment or to get a fresh set of questions.

HW3.4. Illustrate a vector

The origin of the drawing canvas below is the left-top corner. Each square has unit 20.

Insert a vector with tail at position $(120, 60)$. The vector should make an angle $\alpha = 90^o$ counter-clockwise with respect to the horizonal axis.

(The expected tolerance is 1/2 square grid for position and 10 degrees for angle.)

Note: this is an example of repeated variant question. Read more here.

Additional attempts available with new variants

Homework 3

Assessment overview

Total points:	0/65
Score:	0%

Question HW3.4

Value:	2
All variants: Open (current)
Total points:	— /6
Auto-graded question

Previous question Next question

Personal Notes

No attached notes

Staff information

Student details

Dev User

dev@example.com

Question

QID:

demo/annotated/engVectorDrawing

Title:

Illustrate a vector

Variant

Started at:

2026-08-04 16:39:27 (CDT)

Duration:

Show/Hide answer

{
  "ans": [
    {
      "id": 0,
      "x1": 120,
      "y1": 60,
      "top": 60,
      "left": 120,
      "type": "pl-vector",
      "angle": -90,
      "label": "",
      "width": 60,
      "graded": true,
      "stroke": "#c72c1c",
      "evented": false,
      "offsetx": 2,
      "offsety": 2,
      "originY": "center",
      "selectable": false,
      "gradingName": "pl-vector",
      "strokeWidth": 3,
      "trueHandles": [
        "mtr"
      ],
      "drawEndArrow": true,
      "drawErrorBox": true,
      "widthErrorBox": 80,
      "drawStartArrow": false,
      "heightErrorBox": 20,
      "offset_forward": 0,
      "XcenterErrorBox": 120,
      "YcenterErrorBox": 90,
      "disregard_sense": false,
      "offset_backward": 60,
      "optional_grading": false,
      "objectDrawErrorBox": null,
      "arrowheadWidthRatio": 1,
      "arrowheadOffsetRatio": 1
    }
  ]
}

Assessment instance

Assessment:

homework/manualGrading