IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 161 - 165 of 931
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Question 161
Question
MCQ▾If the bisectors of two adjacent angles A and B of a quadrilateral ABCD intersects at a point O such that , then value of k is ________
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 5 | |
b. | 4 | |
c. | 3 | |
d. | 2 | |
Question 162
Question
MCQ▾XYZ is an equilateral triangle for side . J, K and L are midpoints of XY, YZ and XZ respectively. The area of triangle JKL is (in ) ________
Choices
| Choice (4) | Response | |
|---|---|---|
a. | ||
b. | ||
c. | ||
d. | ||
Question 163
Question
MCQ▾The supplementary angle of an angle is one fifth of itself. Then the angle of its supplement are________
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 160˚, 130˚ | |
b. | 150˚, 30˚ | |
c. | 160˚, 20˚ | |
d. | 150˚, 45˚ | |
Question 164
Question
MCQ▾In the adjoining figure, point P the intersection of lines l1 and l2 has coordinates (a, b) as shown here. Which of the following could be the ordered pair (a, b) ?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | ||
b. | ||
c. | ||
d. | ||
Question 165
Question
MCQ▾The supplementary angle of an angle is one third of itself. Then the angle of its supplement are________
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 135˚, 45˚ | |
b. | 120˚, 360˚ | |
c. | 60˚, 120˚ | |
d. | 60˚, 180˚ | |