問 1
1 点Which of the following 2-D shapes has axial symmetry and exactly 2 axes of symmetry?
Primary School · Mathematics
Symmetry (2-D shapes having axial symmetry)：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 4 問。すべて「Symmetry (2-D shapes having axial symmetry)」からの出題です。
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問 2
1 点Which of the following 2-D shapes has exactly 2 axes of symmetry?
問 3
1 点The figure below is a regular hexagram (a six-pointed star formed by two overlapping congruent equilateral triangles). How many axes of symmetry does it have?
問 4
1 点How many axes of symmetry does a square have?
問 5
1 点Which of the following 2-D shapes has axial symmetry and exactly 3 axes of symmetry?
問 6
3 点A 2-D shape is a rhombus that is not a square. How many axes of symmetry does it have in total, and do these axes pass through the vertices or the midpoints of the sides?
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
5 点Identify a quadrilateral that has exactly 4 axes of symmetry and explain why a regular pentagon does not have the same number of axes of symmetry.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 8
3 点An equilateral triangle is shown below. How many axes of symmetry does it have in total?
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 9
6 点Consider the following properties of 2-D geometric shapes and their axial symmetry. Answer the following questions:
(a) A 2-D shape has exactly 3 axes of symmetry and all its sides are equal in length. What is the name of this specific triangle?
(b) Imagine a rectangle that is not a square. How many axes of symmetry does it have? Describe where they are located relative to the sides.
(c) Point A is on one side of an axis of symmetry, and Point B is its reflection on the other side. If the shortest distance from Point A to the axis of symmetry is \(5\) cm, what is the total distance between Point A and Point B?
(d) Which of the following shapes has an infinite number of axes of symmetry: a square, a rhombus, or a circle?
まず自分で答えを書いてから、解説と照らし合わせましょう。
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