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WikiCards · Card list · Science cards · Constructible number
Uncommon card · Science
Constructible number, an Uncommon card
In geometry and algebra, a real number r is constructible if and only if, given a line segment of unit length, a line segment of length | r | can be constructed with compass and straightedge in a finite number of steps.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 71
- DEF
- 74
- Power
- 145
- Wikipedia reads a year
- 22,000
Power 145 (ATK + DEF): stronger than 75 % of WikiCards cards.
Constructible number quiz: 3 questions
Three questions on the Constructible number card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Which of these cards hits hardest (highest ATK)?
Answer
Soling European Championship results. Soling European Championship results 86 · 16-cell 77 · Chemical vapor deposition 74 · Constructible number 71 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Chemical vapor deposition. Chemical vapor deposition 52,000 · Brazilian passport 37,000 · Constructible number 22,000 · 16-cell 17,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Equivalently, r is constructible if and only if there is a closed-form expression for r using only integers and the operations for addition, subtraction, multiplication, division, and square roots.
- The geometric definition of constructible numbers motivates a corresponding definition of constructible points, which can again be described either geometrically or algebraically.
- A point is constructible if it can be produced as one of the points of a compass and straightedge construction, starting from a given unit length segment.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Constructible number article was read about 22,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 71 and blocks with 74: each hit it takes is cut by 30 %.
How to get Constructible number
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Constructible number in the power ranking, all domains together.
- Daniel Caesar discographyUncommon · Arts · ATK 73 DEF 72
- Actinidia chinensis var. deliciosaUncommon · Nature · ATK 68 DEF 77
- André EstevesUncommon · Science · ATK 74 DEF 71
- Cypress Lawn Memorial ParkUncommon · History · ATK 66 DEF 79
- Rahul BhekeUncommon · Society · ATK 76 DEF 69
- Animal embryonic developmentUncommon · Nature · ATK 70 DEF 75
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Constructible number (revision), CC BY-SA 4.0. Photo : derivative work: Pbroks13 ( talk ) Square root of 2 triangle.png : en:User:Fredrik Simplif, Public domain, Wikimedia Commons.
