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Questions and Answers
What is the Greek meaning of 'tetragon'?
What is the Greek meaning of 'tetragon'?
- Three corners or angles
- Six corners or angles
- Five corners or angles
- Four corners or angles (correct)
What does 'convex quadrilateral' mean?
What does 'convex quadrilateral' mean?
- All interior angles are more than 180°
- All interior angles are equal to 180°
- All interior angles are less than 180° (correct)
- All exterior angles are less than 180°
What does the word 'quadrilateral' mean?
What does the word 'quadrilateral' mean?
- A polygon with four edges and four corners (correct)
- A polygon with three edges and three corners
- A polygon with five edges and five corners
- A polygon with six edges and six corners
How do the interior angles of a simple quadrilateral add up?
How do the interior angles of a simple quadrilateral add up?
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What is the special case of the n-gon interior angle sum formula for a quadrilateral?
What is the special case of the n-gon interior angle sum formula for a quadrilateral?
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Study Notes
Geometry: Quadrilaterals
- The Greek word 'tetragon' means 'four-angled'.
- A convex quadrilateral is a shape with four sides and all its interior angles are less than 180°.
- The word 'quadrilateral' refers to a polygon with four sides.
- The interior angles of a simple quadrilateral add up to 360°.
- The special case of the n-gon interior angle sum formula for a quadrilateral is (n-2) × 180°, where n = 4.
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