問 1
1 点Which of the following 2-D shapes has exactly \( 6 \) straight sides and \( 6 \) corners?
Primary School · Mathematics
2-D/3-D shapes：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 5 問。すべて「2-D/3-D shapes」からの出題です。
10 問23 点無料・登録不要
問 2
1 点Which of the following 3-D shapes has exactly \( 5 \) faces, \( 5 \) vertices, and \( 8 \) edges?
問 3
1 点Which of the following statements correctly compares a pentagonal prism and a hexagonal pyramid?
問 4
1 点Which type of triangle has all \( 3 \) sides of the same length?
問 5
1 点A prism has exactly \( 12 \) vertices (corners). How many flat faces does this prism have in total?
問 6
2 点Which of the following 2-D shapes has exactly \( 3 \) axes of symmetry: a square, a rectangle, or an equilateral triangle?
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
4 点A 3-D object possesses 7 flat faces, where two of them are pentagonal and the remaining five are rectangular. It also has 15 straight edges and 10 vertices. What is this shape?
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
5 点A new 2-D shape is formed by joining an equilateral triangle to one side of a square. If the length of each side of the square is \( 5 \) cm, calculate the perimeter of the resulting shape.
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
3 点A cylinder and a cone are both 3-D shapes that have circular components.
a) How many flat faces does a cylinder have? What is the name of the 2-D shape that forms these flat faces?
b) How many flat faces does a cone 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 10
4 点A rectangle is a quadrilateral with specific properties.
a) Name two properties of a rectangle regarding its angles and its opposite sides.
b) If you draw a straight line (diagonal) from one vertex to the opposite vertex of a rectangle, what two identical 2-D shapes are formed?
c) If a rectangle has four equal sides, what is the special mathematical name given to that shape?
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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