IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 158 - 163 of 931
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Question 158
Question
MCQ▾The angles of a triangle are in the ratio . The triangle is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Right | |
| b. | Scalene | |
| c. | Acute | |
| d. | Isosceles | |
Question 159
Question
MCQ▾The measure of an angle is three times the measure of its supplementary angle. Then the angles are________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 45˚, 135˚ | |
| b. | 28˚, 72˚ | |
| c. | 26˚, 154˚ | |
| d. | 50˚, 100˚ | |
Question 160
Question
MCQ▾In the given figure . Which of the following must be true?
Here in Image Define the l1 and l2 Are Parallel Lines
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | ||
| b. | ||
| c. | ||
| d. | ||
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 ________
Image Defines the Bisectors of Two Adjacent Angles a and B
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) ________
XYZ is an Equilateral Triangle for Side Given
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˚ | |