该图形由 16 个相同的正方形组成。图形中含有 5 个阴影正方形。请再涂黑 3 个正方形，使其成为以 AB 为对称轴的…

它不会直接告诉你答案，而是问你卡在哪一步看看 AI 是怎么陪你一步步弄懂这道题的

完整解法

1. Identify the line of symmetry and the positions of the currently shaded squares.

The line of symmetry $AB$ is the main diagonal from top-left (Row 1, Col 1) to bottom-right (Row 4, Col 4).
The currently shaded squares are:

$(1, 1)$ (on the line of symmetry)
$(1, 4)$
$(2, 4)$
$(3, 2)$
$(4, 4)$ (on the line of symmetry)

2. Find the reflection of each shaded square across the diagonal $AB$.

For a diagonal line of symmetry from top-left to bottom-right, the reflection of a square at Row $r$ , Column $c$ is at Row $c$ , Column $r$ .

$(1, 1)$ reflects to $(1, 1)$ (already shaded)
$(1, 4)$ reflects to $(4, 1)$
$(2, 4)$ reflects to $(4, 2)$
$(3, 2)$ reflects to $(2, 3)$
$(4, 4)$ reflects to $(4, 4)$ (already shaded)

3. Identify the 3 squares to be shaded.

The 3 new squares to shade are $(4, 1)$ , $(4, 2)$ , and $(2, 3)$ .

答案

Shade the squares at Row 4 Column 1, Row 4 Column 2, and Row 2 Column 3.

AI 分析，可能出错

用 AI 批改，圈出写错的那一步，并自动将你的薄弱点存入错题本，形成你的错因库。