3 years ago

Use Euler's formula to find the missing number.

Mathematics

2 answers:

irakobra [83]3 years ago

6 0

The answer is C 16 I believe

liraira [26]3 years ago

3 0

Answer: D. 18

Step-by-step explanation:

Euler's formula is Faces + Vertices = Edges + 2

Faces = Edges - vertices + 2

Faces = 39-23 + 2 = 18

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3 years ago

4. Can two lines be parallel and perpendicular? Explain.

lidiya [134]

Answer: No

Step-by-step explanation: First, we need to understand that parallel lines are coplanar lines that do not intersect. On the other hand, perpendicular lines are lines that intersect at a right angle.

However, lines can't be both parallel and perpendicular because they either intersect each other at a right angle or never intersect.

So no, two lines can't be both parallel and perpendicular.

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3 years ago

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denis-greek [22]

Answer:

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Step-by-step explanation:

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Please help me!..............

Anna007 [38]

The answer is D I took the test already

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3 years ago