5 Questions
What is the Greek meaning of 'tetragon'?
Four corners or angles
What does 'convex quadrilateral' mean?
All interior angles are less than 180°
What does the word 'quadrilateral' mean?
A polygon with four edges and four corners
How do the interior angles of a simple quadrilateral add up?
$360^{ ext{o}}$
What is the special case of the n-gon interior angle sum formula for a quadrilateral?
$S = (n − 2) × 180°$
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.
Test your knowledge of quadrilaterals with this quiz that covers the properties, types, and characteristics of these four-sided polygons.
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