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