O is the circumcentre of the triangle ABC and D is the mid-point of the base BC. Prove that...... скачать в хорошем качестве

O is the circumcentre of the triangle ABC and D is the mid-point of the base BC. Prove that......

Class IX Circles Chapter – 10 EXEMPLAR Exercise – 10.3 Q: O is the circumcentre of the triangle ABC and D is the mid-point of the base BC. Prove that ∠ BOD = ∠A. Previous Videos related to this chapter are mentioned in the below link: Theorem-10.1_    • THEOREM-10.1  Equal chords of a circle sub...   Theorem-10.2_    • If the angles subtended by the chords of a...   Theorem-10.3_    • THEOREM-10.3 The perpendicular from the ce...   Theorem-10.4_    • The line drawn through the centre of a cir...   Theorem-10.6_    • Equal chords of a circle (or of congruent ...   Theorem-10.7_    • THEOREM-10.7  Chords equidistant from the ...   Theorem-10.8_    • The angle subtended by an arc at the centr...   Theorem-10.9_    • THEOREM-10.9 Angles in the same segment of...   Example-1_    • Example-1 Given an arc of a circle, comple...   Ex-10.2_Q1_    • Recall that two circles are congruent if t...   Ex-10.4_Q1_    • Two circles of radii 5 cm and 3 cm interse...   Ex-10.4_Q2_    • If two equal chords of a circle intersect ...   Ex-10.4_Q4_    • If a line intersects two concentric circle...   Ex-10.5_Q1_    • In Fig. 10.36, A,B and C are three points ...   Ex-10.5_Q3_    • Q3. In Fig. 10.37, ∠ PQR = 100°, where P, ...   Ex-10.5_Q4_    • Q4. In Fig. 10.38, ∠ ABC = 69°, ∠ ACB = 31...   Ex-10.5_Q6_    • ABCD is a cyclic quadrilateral whose diago...   EX – 10.3 Q1    • If arcs AXB and CYD of a circle are congru...   EX – 10.3 Q2    • If the perpendicular bisector of a chord A...   EX – 10.3 Q3    • A, B and C are three points on a circle. P...   EX – 10.3 Q4    • AB and AC are two equal chords of a circle...   EX – 10.3 Q5    • If a line segment joining mid-points of tw...   EX - 10.3 Q6    • ABCD is such a quadrilateral that A is the...   #cbse #icse #boards #8th #9th #10th #foundation #competition #iit #jee #Advanced #mains #ntse #olympiads #exams #examination #achiever #topper #zenith #zenithinstituteofmathematics #indersir #ludhiana #modelgram #bestmathscoaching #besttutorials #besttuition #bestinludhiana #mathtricks #viii #ix #x #xi #xii #important #excellent #question #circlesclass9 #semicircle #concyclic #diagonals #centre #radius #circularregion #diameter #chord #majorarc #minorarc #circumference #sector #majorsegment #minorsegment #interior #exterior