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3 years ago

10

How many triangles can a heptagon be divided into

2 answers:

denis-greek [22]3 years ago

6 0

A heptagon can be divided into 5 triangles

Svetlanka [38]3 years ago

6 0

Do they all have be even? Well if they do have to be even, the most is at least seven, reason being, with every single polygon with even sides, all the triangles are the same amount as their polygons sides. Reason number two it's seven, when all the lines in vertices meet up in the middle they equal seven.

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mr_godi [17]

Answer:

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Step-by-step explanation:

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3 years ago

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ElenaW [278]

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Step-by-step explanation:

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3 years ago

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natka813 [3]

Answer:

Step-by-step explanation:

Cos θ =<u> u*v </u>

IuI *IvI

u * v = 7*(-1) + (-2)*2

= -7 - 4

= -11

IuI = $\sqrt{7^{2}+(-2)^{2}}\\$

= $\sqrt{49+4}\\\\$

= $\sqrt{53}$

I vI = $\sqrt{(-1)^{2}+2^{2}}\\$

= $\sqrt{1+4}\\\\$

= $\sqrt{5}\\$

Cos θ = $\frac{-11}{\sqrt{53}*\sqrt{5} } \\\\$

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3 years ago

When −2 is multiplied by itself five times, the product is

zubka84 [21]

Answer:

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Step-by-step explanation:

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= 4 x 4 x -2

= 16 x -2

= -32

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QveST [7]

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