What is a tessellation?

An image created by repeating shapes that cover a plane and have no gaps or overlaps.

An image made up of only squares that can be flipped or rotated.

An photograph taken in an outdoor setting.

Defining Tessellations & Concepts

2.

To say that a group of polygons are congruent means...

That they are different from all other shapes pictured.
That their sides are between 3'' and 8'' in length.
That they are all the exact same size and shape.
That there are 6 or more polygons in the group.

Correct Answer

A. That they are all the exact same size and shape.

Explanation

To say that a group of polygons are congruent means that they are all the exact same size and shape. This means that all corresponding sides and angles of the polygons are equal. Congruent polygons can be different from other shapes pictured, but the key characteristic is that they have identical dimensions and shape. The statement about the sides being between 3'' and 8'' in length is not accurate, as congruence is not determined by a specific range of side lengths. The statement about there being 6 or more polygons in the group is also unrelated to the concept of congruence.

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3.

To be considered a regular tessellation a tessellation must...

Be made up of congruent regular polygons
Be composed of normal colors.
Have angles that all measure 20 degrees.
Include a four sided polygon.

Correct Answer

A. Be made up of congruent regular polygons

Explanation

A regular tessellation is a pattern made up of congruent regular polygons that completely covers a plane without any gaps or overlaps. Each polygon must have the same shape and size, and they must fit together perfectly to form a repeating pattern. This ensures that the tessellation is regular and symmetrical. The other options mentioned, such as being composed of normal colors, having angles that all measure 20 degrees, or including a four-sided polygon, are not requirements for a regular tessellation.

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4.

How many semi-regular tessellation combinations are possible?

There are endless possibilities.
18
8
3

Correct Answer

A. 8

Explanation

The question asks for the number of possible semi-regular tessellation combinations. The answer is 8, indicating that there are 8 different combinations possible.

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5.

What 3 regular polygons tessellate in the Euclidean plane?

Triangles, hexagons, circles
Triangles, squares, hexagons
Squares, triangles, circles
Squares, hexagons, polygons

Correct Answer

A. Triangles, squares, hexagons

Explanation

The answer is triangles, squares, hexagons. Regular polygons are shapes with equal sides and angles. In a tessellation, these regular polygons fit together perfectly without any gaps or overlaps to cover a plane. Triangles, squares, and hexagons are examples of regular polygons that can tessellate in the Euclidean plane.

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6.

In relation to polygons, what does the word vertex mean?

It is the ray that cuts through the images.
It is the approximation of the angles.
It is the point where the lines of the polygons meet.
It is the point where the ray crosses the axis.

Correct Answer

A. It is the point where the lines of the polygons meet.

Explanation

The word "vertex" in relation to polygons refers to the point where the lines of the polygons meet. In other words, it is the point where two or more sides of the polygon intersect.

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7.

What is the angle measure of degrees for a triangle?

108 degrees
60 degrees
90 degrees
More than 120 degrees

Correct Answer

A. 60 degrees

Explanation

The angle measure of degrees for a triangle is always 180 degrees. In a triangle, the sum of all three angles is always equal to 180 degrees. Therefore, each angle in a triangle is less than 180 degrees. Among the given options, the only angle measure that is less than 180 degrees is 60 degrees.

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8.

What is the angle measure of degrees for a hexagon?

120 degrees
30 degrees
90 degrees
More than 120 degrees

Correct Answer

A. 120 degrees

Explanation

A hexagon is a polygon with six sides. To find the angle measure of each angle in a regular hexagon, we can use the formula: (n-2) * 180 / n, where n is the number of sides. Plugging in the value for a hexagon, we get (6-2) * 180 / 6 = 4 * 180 / 6 = 720 / 6 = 120 degrees. Therefore, the angle measure of a hexagon is 120 degrees.

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Defining Tessellations & Concepts

What is a tessellation?

Quiz Preview

To say that a group of polygons are congruent means...

To be considered a regular tessellation a tessellation must...

How many semi-regular tessellation combinations are possible?

What 3 regular polygons tessellate in the Euclidean plane?

In relation to polygons, what does the word vertex mean?

What is the angle measure of degrees for a triangle?

What is the angle measure of degrees for a hexagon?