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4 years ago

All equilateral triangles are also isosceles triangles.

Mathematics

2 answers:

Tpy6a [65]4 years ago

8 0

Answer:

True

Step-by-step explanation:

Isosceles triangles are a subset of equilateral triangles

Equilateral have all three sides the same while isosceles have at least 2 sides the same

Equilateral have all three angles equal while isosceles have at least 2 angles equal

Fudgin [204]4 years ago

8 0

Answer:

Yes

Step-by-step explanation:

An equilateral triangle is one where all three sides are of equal length. (3)

An isosceles triangle has at least two sides of equal length. (2)

But, if it's the other way around than no

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I guess the series is

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We have

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On the chance that you meant to write

$\displaystyle\sum_{n=1}^\infty\frac{2^n}{n!n^n}$

we have

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{2^{n+1}}{(n+1)!(n+1)^{n+1}}}{\frac{2^n}{n!n^n}}\right|=2\lim_{n\to\infty}\frac1{(n+1)^2}\left(\frac n{n+1}\right)^2$

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which is less than 1, so this series is absolutely convergent.

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