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alexandr1967 [171]
3 years ago
14

What are the angles of rotational symmetry?

Mathematics
2 answers:
lidiya [134]3 years ago
8 0

Explanation:

Angles of rotational symmetry are the angles by which you can turn a figure about its center of symmetry so that the rotated figure is indistinguishable from the original.

<u>Example</u>

A square has angles of rotational symmetry of 90°, 180°, and 270°. Rotating a square around its center by any of these angles gives you back exactly the same square.

__

The number of angles of rotational symmetry (including 0°) is the <em>degree</em> of rotational symmetry. A square has rotational symmetry of degree 4.

bulgar [2K]3 years ago
4 0

Answer:

A figure has rotational symmetry if it can be rotated by an angle between 0° and 360° so that the image coincides with the preimage.

Step-by-step explanation:

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yan [13]

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Step-by-step explanation:

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NemiM [27]

Answer:

a>−6

Step-by-step explanation:

−4(1−5a)>−124

Step 1: Simplify both sides of the inequality.

20a−4>−124

Step 2: Add 4 to both sides.

20a−4+4>−124+4

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Step 3: Divide both sides by 20.

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2 years ago
Two triangles are similar with a scale factor of 3. The preimage triangle has a base of 7 inches and a height of 10 inches. What
vaieri [72.5K]

Answer:

<u>The area of the larger triangle is 315 inches²</u>

Step-by-step explanation:

1. Let's review all the information provided for answering the questions properly:

Pre-image triangle has a base of 7 inches and a height of 10 inches

Scale used : Factor of 3

2. What is the area of the larger triangle??

For calculating the area of the larger triangle, we use the scale this way:

Base = 7 inches * 3

21 inches

Height = 10 inches * 3

30 inches

Area of the larger triangle = 1/2 (Base * Height)

Area of the larger triangle = 1/2 (21 * 30)

<u>Area of the larger triangle = 630/2 = 315 inches²</u>

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3 years ago
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Answer:

C.

Step-by-step explanation:

y = 6x

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2 years ago
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