1 |
If α, ß, Γ are the angles of a oblique triangle, then: |
- A. α = 90°
- B. ß = 90°
- C. Γ = 90°
- D. none of these
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2 |
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- A. r<sub>1</sub>
- B. r<sub>2</sub>
- C. r<sub>3</sub>
- D. r
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3 |
In triangle the length of the sides are 7, 4√3 and √13. Then the smallest angle is: |
- A. 15°
- B. 30°
- C. 60°
- D. 45°
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4 |
A circle passing though the vertices of a triangle is known as: |
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5 |
The lengths of the sides of a triangle are proportional to the sines of the opposite angles to the sides. This is known as: |
- A. The law of sines
- B. The law of cosines
- C. The law of tangents
- D. The fundamental law
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6 |
In a right isoceles triangle, one acute angle is: |
- A. 30°
- B. 45°
- C. 60°
- D. 75°
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7 |
A circle which touches one side of a triangle externally and the other two produces sides internally is known as: |
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8 |
In a triangle ABC b = √3, c = 1, α = 30° then a = : |
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9 |
In 2s = a + b + , then in any triangle ABC: |
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10 |
The in-radius r of a triangle is given by: |
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