| 1 |
|
- A. 3:5:2
- B.
- C. 3:2:1
- D. 1:2:3
|
| 2 |
r<sub>1 </sub>= |
|
| 3 |
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
|
| 4 |
A circle passing though the vertices of a triangle is known as: |
|
| 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
|
| 6 |
If 2s = a + b + c, where a, b, c are the sides of a triangle ABC, then area of triangle ABC is given by: |
|
| 7 |
r r<sub>1</sub> r<sub>2</sub> r<sub>3</sub> = |
|
| 8 |
With usual notations for triangle R equals: |
|
| 9 |
In any triangle ABC, law of cosines is: |
|
| 10 |
r<sub>3</sub> = |
|
