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4 years ago

How is the number of vertices related to the number of sides of the polygon and to the type of polygon? Give two examples.

1 answer:

8 0

Well,

Take a triangle. It has three vertices and three sides. The three vertices dictate that there will be three sides. The same rule applies for a quadrilateral (four vertices and sides), a pentagon (five vertices and sides), etc. So the number of vertices in a polygon is equal to the number of sides in the same polygon.

Taking this a step further, since the number of vertices are equal to the number of sides, we can conclude that a polygon with three vertices is a triangle, a polygon with four vertices is a quadrilateral, a polygon with five vertices is a pentagon, etc.

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Three friends all have ages that are consecutive integers. The sum of their ages is 180. What is the age of the oldest friend?

Lynna [10]

Answer:

Step-by-step explanation:

Oldest friend=X+2; Middle friend=X+1; Youngest friend=X

X+(X+1)+(X+2)=180

3X+3=180 Subtract 3 from each side.

3X=177 Divide each side by 3

X=59 Youngest friend is 59.

X+2=59+2=61 ANSWER: Oldest friend is 61.

X+2=59+1=60 Middle friend is 60.

CHECK:

Sum is 180

59+60+61=180

180=180

8 0

4 years ago

What is the midpoint between 0.13 and .014

scoundrel [369]

First you add them together and divide by two,
cuz midpoint is basically the middle of two points

i am not quite sure if you are trying to say 0.14 or 0.014, is it a typo?
so i did both, see which one helps

(0.13 + 0.14) ÷ 2= 0.135

(0.13 + 0.014) ÷ 2 = 0.072

4 0

3 years ago

What is the value of this expression when x= -6 and y= -1/2? 4(x2+3)-2y

Ostrovityanka [42]

Answer:y=-10

Step-by-step explanation:

y=-1/2 4(6(2)+3)-2y

+2y 6(2) +2y

3y=-1/2 4(12+3)

multiplie 4 times 12 and 4 times 3

3y=-1/2 48+12

add 48 and 12

3y=-1/2 60

divide -1/2 and 60

3y/3=-30/3

y=-10

3 0

3 years ago

What is the percentage of 13/18?

anzhelika [568]

The percentage of $\frac{13}{18}$ would be $0.72222...$

8 0

4 years ago

If a triangle with vertices A(-1, 4), B(-1, -2), C(2, -2) is dilated with a scale factor of 2 and a center of dilation at the or

givi [52]

Answer:

A' (-2,8) B' (-2,-4) C' (4,-4)

Step-by-step explanation:

Dilations Rule :

(x,y) → (kx,ky)

Scale factor = K

When your scale factor is more than one our triangle gets bigger. When your scale factor is less than one our triangle gets smaller.

( you plug in 2 in every point and those are your answers).

Remember negative times negative is positive and positive times negative is negative.

5 0

3 years ago