Questões de EFAI Matemática

Beatriz drew a picture using two geometric shapes, a triangle and a rectangle. Then, she placed a mirror next to her drawing as shown in the following image

The mirror works as an axis of symmetry, creating a reflection of the drawing made by Beatriz to the right of the mirror.

How would the reflected image of Beatriz’s drawing look on the right side of the mirror?

Butterflies are insects famous for their different patterns of colors and shapes. Observe the image below.

Available at: https://www.shutterstock.com/pt/image-vector/bright-set-vector-butterflies-1916102101. Accessed 16 Dec. 2022.

This butterfly has a kind of geometric property called reflection symmetry.

Choose the alternative that correctly shows the line of symmetry.

Flávia was doing a school project. One of the questions was to identify a pyramid-shaped object in photos.

Which photo could Flávia choose?

It is common to find large logs of wood cut and stacked in large lumber companies, as shown in the following image:

Available at: https://www.shutterstock.com/pt/image-vector/logs-trees-icon-isolated-on-green-1055390564. Accessed 16 Dec. 2022.

The shape of a log of wood is similar to a

Gabriel was walking down the street when he saw an object used to help organize traffic in cities. Observe it below:

Available at: https://www.shutterstock.com/pt/image-vector/white-orange-road-cone-sign-used-191501777. Accessed 16 Dec. 2022.

Which spatial geometric figure does the shape above resemble?

Dice are used in many games. The most common are those numbered on their faces and we usually use them to draw a number from $1$ to $6$.

The dice has a shape of a