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OAR Math Skills: Geometry Flashcards

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

Read the first 7 OAR Math Skills: Geometry flashcards as text

  1. The volume of a cube is 125 in³. What is the length of one edge?

    Answer: 5 in

    V = s³ → s = ∛125 = 5 in.

  2. A right triangle has a hypotenuse of 13 and one leg of 5. What is the length of the other leg?

    Answer: 12

    b² = 13² − 5² = 169 − 25 = 144; b = 12 (the 5-12-13 Pythagorean triple).

  3. An exterior angle of a triangle measures 110°. If one non-adjacent interior angle is 45°, what is the other non-adjacent interior angle?

    Answer: 65°

    An exterior angle equals the sum of the two non-adjacent interior angles: 110° − 45° = 65°.

  4. What is the midpoint of the segment connecting (−4, 2) and (6, −8)?

    Answer: (1, −3)

    Midpoint = ((−4+6)/2, (2+(−8))/2) = (2/2, −6/2) = (1, −3).

  5. A cone has a radius of 6 cm and a height of 9 cm. What is its volume? (Use π ≈ 3.14)

    Answer: 339.12 cm³

    V = (1/3) × π × r² × h = (1/3) × 3.14 × 36 × 9 = 339.12 cm³.

  6. In a coordinate plane, line m has a slope of 3/4. What is the slope of a line perpendicular to m?

    Answer: −4/3

    Perpendicular slopes are negative reciprocals; the negative reciprocal of 3/4 is −4/3.

  7. A regular hexagon has a side length of 6 cm. What is the sum of its interior angles?

    Answer: 720°

    Sum of interior angles = (n − 2) × 180° = (6 − 2) × 180° = 720°.