C-08-Q129mediumsingle_mcq

Corollary 7: a parallelogram inscribed in a circle is a—

arhombus
bsquare only
crectangle
dtrapezium

ব্যাখ্যা

In a parallelogram opposite angles are equal, but a cyclic quadrilateral requires opposite angles to be supplementary; both conditions hold only when each angle is $90^{\circ}$ , making it a rectangle.

এই অধ্যায়ের আরও প্রশ্ন

C-08-Q130If a cyclic quadrilateral has , then is—
C-08-Q131If of cyclic quadrilateral is , then is—
C-08-Q132Theorem 24 states that if two opposite angles of a quadrilateral are supplementary, then the four vertices are
C-08-Q133Theorem 24 is the converse of—
C-08-Q134The proof of Theorem 24 begins by assuming a circle through three of the four vertices and seeking a contradic
C-08-Q135In the proof, is the second intersection point of side with the auxiliary circle through . We deduce , which c
C-08-Q136The conclusion of Theorem 24 is that—
C-08-Q137The internal and external bisectors of and of meeting at and make —
C-08-Q138In Exercise 8.3 Q2, four points are—
C-08-Q139If chords of a circle with centre meet at right angles inside the circle, then equals—

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