学校的平面图显示在方格网中。

  1. (a)

    Devi 沿着直线直接从食堂走到操场。

    她是往哪个方向走的？

  2. (b)

    Shi Ling 站在其中一个位置，面对着图书馆。当她逆时针旋转 45°45\degree 后，她面对着牙科诊所。

    Shi Ling 当时在哪个位置？

认识角及角的大小English
先不看答案，让 AI 诊断你卡在哪里？

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

25(a)

1. Determine the relative position of the field from the canteen

The field is located above (North) and to the left (West) of the canteen on the grid.

2. State the compass direction

A movement that is both North and West corresponds to the North-West direction.

答案

North-West

25(b)

1. Identify the relative positions of the library and dental clinic from the garden.

From the garden, the library is located to the South-West.
The dental clinic is located directly South of the garden.

2. Apply the 45° anticlockwise turn to verify the location.

Facing South-West (towards the library) and turning 45∘45^\circ anticlockwise results in facing South.
Since the dental clinic is directly South of the garden, this matches the given conditions perfectly.

答案

Garden

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。

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  2. 2在下图中，ABCD 是一个梯形。AF 和 EC 是直线。 佩珊写了四个陈述来描述该图形。 陈述 A：∠AED=∠ABC\angle AED = \angle ABC 陈述 B：∠EDA=∠FDC\angle EDA = \angle FDC 陈述 C：∠ABC+∠ECB=180∘\angle ABC + \angle ECB = 180^\circ…
  3. 3在下图中，ABGF 和 BCDG 是菱形。∠ABF=31∘\angle ABF = 31^\circ，∠CBG=40∘\angle CBG = 40^\circ 且 EF 平行于 DG。 求 ∠FGD\angle FGD。 求 ∠DFE\angle DFE。
  4. 4图中，PQ = PS 且 SRP 是一条直线。求 ∠RQS\angle\text{RQS}。 答：___ ∘^\circ
  5. 53.76°= 度 分 秒．