Curriculum Development Flashcards
7 cards from real AMC 12 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Curriculum Development flashcards as text
What is the area of a triangle with side lengths 3, 4, and 5?
Answer: 6
It is a right triangle with legs 3 and 4, so area = (3)(4)/2 = 6.
What is the sum of the interior angles of a hexagon?
Answer: 720 degrees
(n - 2) x 180 = 4 x 180 = 720 degrees.
A chord of a circle with radius 5 is 3 units from the center. How long is the chord?
Answer: 8
Half the chord is sqrt(25 - 9) = 4, so the chord is 8.
What is the distance between the points (1, 2) and (4, 6)?
Answer: 5
sqrt(3^2 + 4^2) = sqrt(25) = 5.
What is the length of the space diagonal of a cube with side length 2?
Answer: 2sqrt(3)
Space diagonal = s*sqrt(3) = 2sqrt(3).
What is the area of an equilateral triangle with side length 6?
Answer: 9sqrt(3)
Area = (sqrt(3)/4)(36) = 9sqrt(3).
An inscribed angle intercepts an arc of 100 degrees. What is the angle's measure?
Answer: 50 degrees
An inscribed angle is half its intercepted arc.
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