C-08-Q170mediumsingle_mcq

Theorem 26 states that two tangents drawn to a circle from an external point have—

aunequal lengths
bequal lengths
czero length
dlengths depending on the angle only

ব্যাখ্যা

By Theorem 26, the two tangent segments drawn from a common external point to a circle are equal in length. This follows from the congruence of the two right triangles formed with the radii and the line to the centre.

এই অধ্যায়ের আরও প্রশ্ন

C-08-Q171In the proof of Theorem 26, and are—
C-08-Q172The congruence used in Theorem 26 is—
C-08-Q173After the congruence, because they are—
C-08-Q174If and are tangents from an external point to a circle with centre , then is—
C-08-Q175also bisects the angle—
C-08-Q176Two tangents and are drawn from to a circle. If and centre is , then equals—
C-08-Q177Two tangents and are drawn from to a circle with centre such that . The value of is—
C-08-Q178Theorem 27: if two circles touch each other externally, the point of contact and the two centres are—
C-08-Q179The proof of Theorem 27 uses the fact that at the point of contact—
C-08-Q180Since right angle, at the point of contact is a—

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