Answer
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Hint: Recall the definitions of a triangle, quadrilateral, circle, and diagonal. The word quadrilateral is of Latin origin and “Quadri” means four.
Complete step-by-step answer:
A polygon is defined as a flat or plane, a two-dimensional closed shape with straight sides. It does not have any curved sides. A polygon has three or more than three sides and if the sides are equal, it is called a regular polygon.
A three-sided polygon is called a triangle and it is the basic polygon.
A circle is a round two-dimensional figure that has no corners or edges. It can also be defined as a regular polygon with an infinite number of sides, so that its boundary is smooth.
A diagonal is a straight line connecting the opposite corners of a polygon through its vertex. The triangle does not have a diagonal.
A four-sided polygon is called a quadrilateral. It has four sides, four angles, and four vertices. A quadrilateral can also be regular or irregular. A regular quadrilateral is called a square.
The sum of the angles of a quadrilateral is 360°. The other special quadrilaterals are rectangle, parallelogram, rhombus, and kite.
Hence, the correct answer is option (b).
Note: This is a straightforward question and you might confuse yourself with the definition of a triangle and diagonal and choose any of them as the correct answer, which is wrong.
Complete step-by-step answer:
A polygon is defined as a flat or plane, a two-dimensional closed shape with straight sides. It does not have any curved sides. A polygon has three or more than three sides and if the sides are equal, it is called a regular polygon.
A three-sided polygon is called a triangle and it is the basic polygon.
A circle is a round two-dimensional figure that has no corners or edges. It can also be defined as a regular polygon with an infinite number of sides, so that its boundary is smooth.
A diagonal is a straight line connecting the opposite corners of a polygon through its vertex. The triangle does not have a diagonal.
A four-sided polygon is called a quadrilateral. It has four sides, four angles, and four vertices. A quadrilateral can also be regular or irregular. A regular quadrilateral is called a square.
The sum of the angles of a quadrilateral is 360°. The other special quadrilaterals are rectangle, parallelogram, rhombus, and kite.
Hence, the correct answer is option (b).
Note: This is a straightforward question and you might confuse yourself with the definition of a triangle and diagonal and choose any of them as the correct answer, which is wrong.
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