Activity 4 - Concreção 9324

Some works by Luiz Sacilotto stand out for exploring visual effects related to optical illusions, providing the viewer with a sense of movement or three-dimensionality. One example is [i]Concreção 9324[/i] and some other paintings created from the 1990s onward.

Figure 4 - Concreção 9324

[i]Concreção 9324[/i], 1993[br]Tempera and acrylic on canvas.[br]90 cm × 110 cm.[br]Private Collection[br]Source: Sacilotto, 2021

Question 1

In the artwork [i]Concreção 9324[/i], Luiz Sacilotto explores some well-known geometric shapes. Check the ones you recognize from the list below.

Trapezoids. Squares. Isosceles triangles. Rhombuses. Others. Scalene triangles. Right triangles. Parallelograms.

Question 2

Which geometric transformation(s) can we identify in this artwork?

Homothety. Reflection. Translation. Rotation.

Question 3

Do you consider the artwork, as a whole, to be a symmetrical figure? Justify your answer.

Use the image below to answer Question 04.

Source: The author.

Question 4

In this section of the artwork [i]Concreção 9324[/i], we highlight a line containing the sides of parallelograms and right isosceles triangles. What does this line represent in this section?

Use the image below to answer the following questions.

Source: The author.

Question 5

Which geometric transformation(s) involve parallelograms 1 and 2 highlighted in the image? Justify your answer.[br]

Question 6

Which geometric transformation(s) involve triangles 3 and 4 highlighted in the image? Justify your answer.

Access GeoGebra Geometry through the link [url=https://www.geogebra.org/geometry/ayusghrq]https://www.geogebra.org/geometry/ayusghrq[/url] and feel free to reinterpret the artwork using the tools you are familiar with from GeoGebra.