☰ Contents · Computing

Selecting a geometric-shaped part of an image

Lessons 6 · 1 lessons · N. I. Taylaqov (general editor), A. B. Akhmedov, M. D. Pardayeva, A. A. Abdug‘aniyev, U. M. Mirsanov. Informatics and Information Technologies, Grade 11, 1st edition. “Extremum-press”, Tashkent, 2018
Answers are for parents and teachers.
1
How many pixels are in a 300×200 pixel rectangle?
2
A is 120×50, B is 80×50, and they overlap in a 30×50 part. How many pixels in the union?
3
For the same A and B, how many pixels are in the intersection?
4
Which key helps to make a perfect square or circle while dragging with a Marquee tool?
5
How is a selection closed with the Polygonal Lasso?