Secondary Mathematics Flashcards

6 cards from real OSAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Secondary Mathematics flashcards as text

What is the sum of the interior angles of a hexagon?
Answer: 720°
Using (n − 2) × 180°, a hexagon (n = 6) has (6 − 2) × 180° = 720°.
Two triangles are similar if their corresponding angles are equal and their corresponding sides are in what relationship?
Answer: Proportional
Similar triangles have equal corresponding angles and proportional corresponding sides.
What is the volume of a cylinder with radius 3 cm and height 10 cm? (Use π ≈ 3.14)
Answer: 282.6 cm³
V = πr²h = 3.14 × 9 × 10 = 282.6 cm³.
In a right triangle, if a = 5 and b = 12, what is the length of the hypotenuse c?
Answer: 13
Using a² + b² = c²: 25 + 144 = 169, so c = √169 = 13.
Which transformation preserves both the size and shape of a geometric figure?
Answer: Rotation
A rotation is an isometry — it preserves distance and shape — while dilation changes size and stretches/compressions distort proportions.
What is the relationship between the slopes of two perpendicular lines?
Answer: They are negative reciprocals of each other
Two perpendicular lines have slopes that are negative reciprocals: m₁ × m₂ = −1.

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