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 Rectilinear Figures 40 Flashcards |
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What is a polygon with four sides called? |
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Quadrilateral |
Card: 2 / 40 |
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True or False: A concave polygon has all interior angles less than 180°. |
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False. A concave polygon has at least one interior angle greater than 180°. |
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The sum of the interior angles of a polygon with n sides is given by the formula ______. |
Card: 5 / 40 |
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(2n - 4) × 90° |
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Which of the following quadrilaterals has equal opposite sides? A) Rectangle B) Trapezium C) Triangle D) Circle |
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A) Rectangle |
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Riddle: I have four equal sides and all angles are right. What am I? |
Card: 9 / 40 |
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Square |
Card: 10 / 40 |
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What is the relationship between the interior angle and exterior angle at a vertex of a polygon? |
Card: 11 / 40 |
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Interior angle + Exterior angle = 180° |
Card: 12 / 40 |
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True or False: In a parallelogram, the diagonals are always equal. |
Card: 13 / 40 |
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False. In a parallelogram, the diagonals are equal only in rectangles. |
Card: 14 / 40 |
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Fill in the blank: The diagonals of a ______ bisect each other at right angles. |
Card: 15 / 40 |
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Rhombus |
Card: 16 / 40 |
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If each exterior angle of a regular polygon measures x°, how many sides does the polygon have? |
Card: 17 / 40 |
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360 / x |
Card: 18 / 40 |
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In an isosceles trapezium, what is true about the base angles? |
Card: 19 / 40 |
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The base angles are equal. |
Card: 20 / 40 |
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What is the sum of the exterior angles of any polygon? |
Card: 21 / 40 |
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360° |
Card: 22 / 40 |
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Riddle: I am a quadrilateral with one pair of parallel sides. What am I? |
Card: 23 / 40 |
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Trapezium |
Card: 24 / 40 |
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True or False: A regular polygon has all sides and angles equal. |
Card: 25 / 40 |
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True |
Card: 26 / 40 |
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Fill in the blank: The diagonals of a rectangle are ______. |
Card: 27 / 40 |
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Equal |
Card: 28 / 40 |
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Which theorem states that if one pair of opposite sides of a quadrilateral is equal and parallel, it is a parallelogram? |
Card: 29 / 40 |
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Theorem 13 |
Card: 30 / 40 |
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In a parallelogram, opposite angles are ______. |
Card: 31 / 40 |
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Equal |
Card: 32 / 40 |
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What is the sum of angles in a quadrilateral? |
Card: 33 / 40 |
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360° |
Card: 34 / 40 |
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Riddle: I am a polygon with all angles equal and all sides equal, and I have six sides. What am I? |
Card: 35 / 40 |
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Regular hexagon |
Card: 36 / 40 |
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True or False: The diagonals of a square meet at acute angles. |
Card: 37 / 40 |
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False. The diagonals of a square meet at right angles. |
Card: 38 / 40 |
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Fill in the blank: Each interior angle of a regular polygon with n sides is given by ______. |
Card: 39 / 40 |
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[(2n - 4) × 90°] / n |
Card: 40 / 40 |
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Completed! Keep practicing to master all of them. |
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