C-08-Q188mediumsingle_mcq

$AB$ is a diameter of a circle and $BC$ a chord equal to the radius. If tangents at $A$ and $C$ meet at $D$ , then $\triangle ACD$ is—

aright-angled
bequilateral
cisosceles only
dscalene

ব্যাখ্যা

Since $BC$ equals the radius and $AB$ is a diameter, the geometry forces all three sides of $\triangle ACD$ to be equal, making it equilateral (each angle $60^\circ$ ).

এই অধ্যায়ের আরও প্রশ্ন

C-08-Q189A circumscribed quadrilateral of a circle has the angles subtended by opposite sides at the centre—
C-08-Q190From a point outside a circle with centre , tangents and are drawn. Then segment is the perpendicular bisector
C-08-Q191Two tangents and from external to a circle with centre make —
C-08-Q192To find the centre of a circle (or arc), one takes—
C-08-Q193The intersection of the perpendicular bisectors of two chords of a circle—
C-08-Q194Construction 6 works for an arc because the perpendicular bisector of any chord—
C-08-Q195To draw a tangent at point on a circle with centre , one constructs—
C-08-Q196At any point on a circle, the number of tangents that can be drawn is—
C-08-Q197To draw a tangent from an external point to a circle with centre , the auxiliary circle is drawn with—
C-08-Q198The auxiliary circle (in Construction 8) passes through because—

Circle — সব প্রশ্ন দেখুন (231টি) →

ABABAB is a diameter of a circle and BCBCBC a chord equal to the radius. If tangents at AAA and CCC meet at DDD, then △ACD\triangle ACD△ACD is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

ABABAB is a diameter of a circle and BCBCBC a chord equal to the radius. If tangents at AAA and CCC meet at DDD, then △ACD\triangle ACD△ACD is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

$AB$ is a diameter of a circle and $BC$ a chord equal to the radius. If tangents at $A$ and $C$ meet at $D$ , then $\triangle ACD$ is—

$AB$ is a diameter of a circle and $BC$ a chord equal to the radius. If tangents at $A$ and $C$ meet at $D$ , then $\triangle ACD$ is—