| 1 |
The in-radius r of a triangle is given by: |
|
| 2 |
In a right isoceles triangle, one acute angle is: |
- A. 30°
- B. 45°
- C. 60°
- D. 75°
|
| 3 |
In any triangle ABC, law of cosines is: |
|
| 4 |
If 2s = a + b + c, then in any triangle ABC: |
|
| 5 |
A circle passing though the vertices of a triangle is known as: |
|
| 6 |
|
- A. 3:5:2
- B.
- C. 3:2:1
- D. 1:2:3
|
| 7 |
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
|
| 8 |
r<sub>1 </sub>= |
|
| 9 |
If 2s = a + b +c, then in any triangle ABC: |
- A.
- B.
- C.
- D. none of these
|
| 10 |
With usual notations for triangle R equals: |
|
