ABCD হল একটি চক্রীয় চতুর্ভুজ যার কর্ণগুলি E বিন্দুতে ছেদ করে। যদি `/_D BC\\ =\\ 70^o,` ...

ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If /_D B C" "=" "70^o, /_B A C" "i s" "30^o , find /_B C D . Further, if A B" "=" "B C , find/_E C D .

In Fig. 6.13, lines AB and CD intersect at O. If /_A O C\ +/_B O E=70^@ and /_B O D=40^@ , find /_B O E and reflex /_C O E .

Can a quadrilateral ABCD be a parallelogram if (i) < D + < B=180^@ ? (ii) AB=DC=8cm, AD=4cm and BC=4.4cm ? (iii) A=70^@ and < C = 65^@ ?

in the given figure, AB and BC are two chords of the circle with Centre O, where /_BAO = 50°, /_BCO = 35°, then /_AOC is equal to A)170° b)70° c)150° d)None of these

ABCD is a quadrilateral such that angle D= 90^@ . A circle with centre O touches the sides AB, BC and CD and DA at P, Q, R and S respectively. If BC = 40 cm, BP = 28 cm and CD = 25 cm, then what is the radius of the circle is: ABCD एक चतुर्भुज है जैसे angle D= 90^@ । केन्द्र O वाला एक वृत्त क्रमशः AB, BC और CD और DA को P, Q,R और S से छूता है। यदि BC = 40 सेमी, BP = 28 सेमी और CD = 25 सेमी है, तो वृत्त का त्रिज्या क्या है

In Fig.104, A B C D ,\ /_O A B=150^0\ a n d\ /_O C D=120^0dot Then, /_A O C= (a) ( b ) (c) (d) (e) 80^(( f )0( g ))( h ) (i) (j) (b) ( k ) (l) (m) (n) 90^(( o )0( p ))( q ) (r) (s) (c) ( d ) (e) (f) (g) 70^(( h )0( i ))( j ) (k) (l) (d) ( m ) (n) (o) (p) 100^(( q )0( r ))( s ) (t) (u)

ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PS_MATH_VII_C06_E06_001_Q01.png" width="80%"gt In the figure given above, ABCD is a quadrilateral and BPDQ is parallelogram. AR = 50 cm, CQ = 70 cm, BR = 60, and PR = 40 cm. If the area of the quadrilateral ABCD is 15,600cm^(2) , then find the area of then find the area of the parallelogram BPDQ (in cm^(2) ).