C-08-Q093mediumsingle_mcq

In a semicircle, the angle on the arc $\angle BAC$ at any point on the circle is a—

astraight angle
bright angle
cobtuse angle
dreflex angle

ব্যাখ্যা

The angle in a semicircle, i.e. the inscribed angle $\angle BAC$ standing on a diameter, is always a right angle ( $90^\circ$ ). This follows from Theorem 20 since it is half of the straight central angle $180^\circ$ .

এই অধ্যায়ের আরও প্রশ্ন

C-08-Q094Theorem 20: the angle subtended by an arc at the centre is— the angle subtended by the same arc at any point o
C-08-Q095If an arc subtends an angle of at the centre, the angle subtended at the circumference is—
C-08-Q096If an inscribed angle is , the corresponding central angle is—
C-08-Q097In the proof of Theorem 20, the auxiliary line drawn through passes through—
C-08-Q098The proof uses the fact that an exterior angle of a triangle equals—
C-08-Q099In , implies because—
C-08-Q100Since , similarly equals—
C-08-Q101Adding the two relations gives
C-08-Q102The Work box accompanying Theorem 20 asks to prove the theorem when—
C-08-Q103The angle standing on an arc of the circle equals— the angle subtended by the arc at the centre.

Circle — সব প্রশ্ন দেখুন (231টি) →

In a semicircle, the angle on the arc $\angle BAC$ at any point on the circle is a—

astraight angle

bright angle

cobtuse angle

dreflex angle

In a semicircle, the angle on the arc ∠BAC\angle BAC∠BAC at any point on the circle is a—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In a semicircle, the angle on the arc ∠BAC\angle BAC∠BAC at any point on the circle is a—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In a semicircle, the angle on the arc $\angle BAC$ at any point on the circle is a—

In a semicircle, the angle on the arc $\angle BAC$ at any point on the circle is a—