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Quadrilaterals & Polygons Flashcards

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

Read the first 7 Quadrilaterals & Polygons flashcards as text

  1. What is the area of a rhombus with diagonals of 8 and 6?

    Answer: 24

    Area = ½ × d₁ × d₂ = ½ × 8 × 6 = 24.

  2. A polygon with 12 sides is called a:

    Answer: Dodecagon

    A 12-sided polygon is named a dodecagon.

  3. In an isosceles trapezoid, the base angles are:

    Answer: Congruent

    An isosceles trapezoid has congruent base angles along each parallel side.

  4. The sum of the exterior angles of any convex polygon is:

    Answer: 360°

    The exterior angles of any convex polygon always total 360°.

  5. If a parallelogram has one angle of 70°, what is the adjacent angle?

    Answer: 110°

    Adjacent angles are supplementary, so 180° − 70° = 110°.

  6. Which quadrilateral has diagonals that are perpendicular but not necessarily equal?

    Answer: Rhombus

    A rhombus has perpendicular diagonals of generally unequal length.

  7. How many triangles are formed when all diagonals from a single vertex of a heptagon are drawn?

    Answer: 5

    A polygon splits into (n-2) triangles, so a heptagon gives 7-2 = 5.