Do You Know Geometric Transformations?

1.

What are the domain and range of geometric transformation?

A.

Z2 or both Z3.
B.

R2 or both R3.
C.

D2 or both R3.
D.

R2 or both Z3.

Correct Answer
B. R2 or both R3.

Explanation
The domain and range of geometric transformation can be either R2 (two-dimensional Euclidean space) or both R3 (three-dimensional Euclidean space). This means that the transformation can either be applied to points in a two-dimensional space or in both two-dimensional and three-dimensional spaces.

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2.

Geometric transformations are required to be a functions, so that they have inverses, what is the function?

A.

1-1 function
B.

1-7 function
C.

1-5 function
D.

2-2 function

Correct Answer
A. 1-1 function

Explanation
A 1-1 function, also known as an injective function, is a function where each element in the domain is mapped to a unique element in the range. In the context of geometric transformations, a 1-1 function ensures that each point in the original shape is transformed to a unique point in the transformed shape, without any overlapping or duplication. This property is important for the function to have an inverse, allowing the original shape to be reconstructed from the transformed shape. Therefore, a 1-1 function is required for geometric transformations.

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3.

Geometric transformations can be classified into how many properties they preserve?

A.

5
B.

8
C.

9
D.

14

Correct Answer
A. 5

Explanation
Geometric transformations can be classified into five properties that they preserve. These properties include shape, size, orientation, distance, and angle. Shape preservation means that the transformed figure has the same shape as the original figure. Size preservation means that the transformed figure has the same size as the original figure. Orientation preservation means that the transformed figure has the same orientation as the original figure. Distance preservation means that the distances between any two points in the transformed figure are the same as the distances between the corresponding points in the original figure. Angle preservation means that the angles between any two lines in the transformed figure are the same as the angles between the corresponding lines in the original figure.

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4.

Geometric transformation can also take the following classes, except?

A.

Circle inversion
B.

Conformal transformation
C.

Rectangle inversion
D.

Homeomorphisms

Correct Answer
C. Rectangle inversion

Explanation
Geometric transformations refer to the mapping of points or shapes in a plane. Circle inversion, conformal transformation, and homeomorphisms are all examples of geometric transformations. However, rectangle inversion is not a recognized class of geometric transformation.

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5.

_______________________, preserving angles, are, in the first order, similarities.

A.

Homeomorphisms
B.

Conformal transformations
C.

Circle Inversion
D.

Triangle transformation

Correct Answer
B. Conformal transformations

Explanation
Conformal transformations are a type of mapping that preserve angles between curves. This means that if two curves intersect at a certain angle, their images under a conformal transformation will also intersect at the same angle. Homeomorphisms, on the other hand, are mappings that preserve the topological structure of a space, but not necessarily the angles. Circle inversion is a specific type of conformal transformation that maps circles to other circles or straight lines. Triangle transformation is not a well-defined concept in mathematics. Therefore, the correct answer is conformal transformations.

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6.

Which of the following are the transformations that are affine in the first order; they contain the preceding ones as special cases, and can be further refine?

A.

Triangle transformation
B.

Circle Inversion
C.

Homeomorphisms
D.

Diffeomorphisms

Correct Answer
D. DiffeomorpHisms

Explanation
Diffeomorphisms are transformations that are affine in the first order, contain the preceding ones as special cases, and can be further refined. Diffeomorphisms are smooth bijective mappings between differentiable manifolds that have smooth inverse mappings. They preserve the local structure of the manifold and can be used to describe smooth deformations or changes in shape. Therefore, diffeomorphisms satisfy the criteria mentioned in the question. Triangle transformation, circle inversion, and homeomorphisms may not necessarily satisfy all the mentioned criteria.

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7.

Affine transformations preserve what?

A.

Parallelism
B.

Angle
C.

Distance
D.

Oriented angle

Correct Answer
A. Parallelism

Explanation
Affine transformations preserve parallelism. This means that if two lines are parallel before the transformation, they will remain parallel after the transformation. Affine transformations include translation, rotation, scaling, and shearing. These transformations do not change the relative orientation or distance between parallel lines. Therefore, the correct answer is parallelism.

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8.

Isometries preserve what?

A.

Parallel
B.

Distances.
C.

Angles
D.

Angles and distances

Correct Answer
D. Angles and distances

Explanation
Isometries are transformations that preserve the shape and size of an object. They include translations, rotations, and reflections. When applied to a figure, isometries maintain the lengths of its sides and the angles between them. Therefore, the correct answer is that isometries preserve both angles and distances.

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9.

A transformation is a general term for _____________ ways to manipulate the shape of a point, a line, or shape.

A.

Three specific
B.

Four specific
C.

Two specific
D.

Six specific

Correct Answer
A. Three specific

Explanation
A transformation is a general term for three specific ways to manipulate the shape of a point, a line, or shape. These three specific ways are translation, rotation, and reflection. Translation involves moving an object from one location to another without changing its shape or orientation. Rotation involves rotating an object around a fixed point, changing its orientation. Reflection involves flipping an object over a line, creating a mirror image. Therefore, the correct answer is "three specific".

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10.

The following are types of geometric transformation in maths, except?

A.

Rotation
B.

Deflection
C.

Reflection
D.

Translation

Correct Answer
B. Deflection

Explanation
Deflection is not a type of geometric transformation in mathematics. Geometric transformations involve changing the position, shape, or size of a geometric figure. Rotation, reflection, and translation are all examples of geometric transformations, as they involve moving or changing the position of a figure. However, deflection refers to the bending or deviation of an object from its original path or position, and is not considered a geometric transformation in the context of mathematics.

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