Page 191 - NUMINO Challenge_M1
P. 191
Answer
Key
Problem solving : 6, Big triangles :2
1 Small triangles
There are 6+2=8 big and small triangles in total.
2 The following shows the triangles and quadrilaterals that can be found.
1 1
21
7
1 6
1
There are 5 triangles and 15 quadrilaterals in total.
Creative Thinking
The shape does not change when it is slid up. When the shape is reflected on
the mirror, the left and right of the shape is switched.
Mirror
Original shape
A line extends in both directions without an end.
6 lines can be drawn.
54 NUMINO Challenge M1
Key
Problem solving : 6, Big triangles :2
1 Small triangles
There are 6+2=8 big and small triangles in total.
2 The following shows the triangles and quadrilaterals that can be found.
1 1
21
7
1 6
1
There are 5 triangles and 15 quadrilaterals in total.
Creative Thinking
The shape does not change when it is slid up. When the shape is reflected on
the mirror, the left and right of the shape is switched.
Mirror
Original shape
A line extends in both directions without an end.
6 lines can be drawn.
54 NUMINO Challenge M1
