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3 years ago

What is the definition of reflection in geometry?

2 answers:

7 0

Every point is the same distance from the central line ! ... and ... Thereflection has the same size as the original image. The central line is called the Mirror Line .

pishuonlain [190]3 years ago

5 0

Well...
The word reflection (in general) is the mirror image of something
Geometry refers to the study of shapes
Therefore, the geometric term "reflection" is <em>a mirror image of a shape.</em>

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1. what’s the distance between (-8, -6) and (4, 10)?

charle [14.2K]

Use the formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$(-8,\ -6),\ (4,\ 10)\\\\d=\sqrt{(4-(-8))^2+(10-(-6))^2}=\sqrt{12^2+16^2}\\\\=\sqrt{144+256}=\sqrt{400}=\boxed{20}\\\\(5,\ 14),\ (-3,\ -9)\\\\d=\sqrt{(-3-5)^2+(-9-14)^2}=\sqrt{(-8)^2+(-23)^2}\\\\=\sqrt{64+529}=\boxed{\sqrt{593}\approx24.35}$

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3 years ago

Which of the following expressions is equivalent to -9?

dlinn [17]

Answer:

A and C

Step-by-step explanation:

-3*3 = -9

-1*-9 = 9

-27/3 = -9

-9/-1 = 9

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3 years ago

Read 2 more answers

What is the coefficient of x2 in this trinomial?

Scorpion4ik [409]

Answer:1

Step-by-step explanation:

(x+2)(x+3)

x^2+3x+2x+6

x^2+5x+6

Therefore the coefficient of x^2 is 1

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4 years ago

Read 2 more answers

Sandra is making decorations for the school dance out of construction paper. Each decoration uses 223 2 2 3 sheets of paper. San

scoundrel [369]

Answer:

Step-by-step explanation:

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4 years ago

What is the slope-intercept equation of the line whose y-intercept is<br> 8 with slope -5?

ira [324]

Answer:

y = - 5x + 8

Step-by-step explanation:

Given that :

Intercept = 8

Slope = - 5

Recall, the general. Slope - intercept equation :

y = bx + c

Where;

b = slope ; c = intercept

Plugging the Given slope and intercept values, equation becomes ;

y = - 5x + 8

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3 years ago