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In a quadrilateral PQRS
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(i) Name the sides, angles, vertices and diagonals.
(ii) Also name all the pairs of adjacent sides, adjacent angles, opposite sides and opposite angles.

Answer
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Hint: In order to solve the problem use the figure and simple visualization. Basic definitions of quadrilateral will be used to solve the second part of the problem.

Complete step-by-step answer:
For the quadrilateral PQRS
Sides: PQ,QR,RS,SP
Angles: PQR,QRS,RSP,SPQ
Vertices: P,Q,R,S
Diagonal: PR,QS

Pairs of adjacent sides:
{PQ,QR},{QR,RS},{RS,SP},{SP,PQ}
Pairs of adjacent angles:
{PQR,QRS},{QRS,RSP},{RSP,SPQ},{SPQ,PQR}
Pairs of opposite sides:
PS,QR and QP,RS
Pairs of opposite angles
QRS,SPQ and RSPPQR

Note: A quadrilateral is a polygon with four edges and four vertices or corners. Adjacent sides are sides of a polygon that have a common vertex. Two angles are Adjacent when they have a common side and a common vertex (corner point) and don't overlap.
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