Triangles and Circles [IMO Level 1- Mathematics Olympiad (SOF) Class 9]: Questions 61 - 66 of 79
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Question 61
Question MCQ▾
The area of a quadrilateral, one of whose diagonals is 30 cm long and the perpendiculars from the other two vertices are 19 cm and 11 cm respectively is ________
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a. | ||
b. | ||
c. | ||
d. |
Question 62
Question MCQ▾
DEF is an equilateral triangle of side . S, T and U are midpoints of DE, EF and DF respectively. The area of triangle STU is ________
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Choice (4) | Response | |
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a. | ||
b. | ||
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d. |
Question 63
Question MCQ▾
The sides BC, CA and AB of are produces in order to form exterior angles and , then is ________
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Question 64
Question MCQ▾
In the medians PS, QT and RU pass through O. if , and then OS is ________
Choices
Choice (4) | Response | |
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a. | 2.5 | |
b. | 2.6 | |
c. | 2.3 | |
d. | 2.9 |
Question 65
Question MCQ▾
PQRS is a cyclic Quadrilateral whose diagonals intersect at a point E. If , , , then = ________
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Question 66
Question MCQ▾
O, P, Q and R are four points on a circle. OQ and PR intersect at a point S such that and , then angle is ________
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Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |