| List I | List II |
| A. The sum of exterior angles of a triangle equals | 1. \[{{90}^{o}}\] |
| B. Each angle of an equilateral triangle equals | 2. \[{{180}^{o}}\] |
| C. Each acute angle of an isosceles right angled triangle equals | 3. \[{{360}^{o}}\] |
| D. A parallelogram is a rectangle if one of its angles equals | 4. \[{{60}^{o}}\] |
| 5. \[{{45}^{o}}\] |
A) A-2 B-4 C-5 D-1
B) A-2 B-5 C-4 D-1
C) A-3 B-4 C-5 D-1
D) A-3 B-5 C-4 D-1
Correct Answer: C
Solution :
[a] the sum of exterior angles of a triangle is \[{{360}^{o}}\]. [b] Each angle of an equilateral triangle is equal to \[{{60}^{o}}\]. [c] Each acute angle of an isosceles right angled triangle is \[{{45}^{o}}\]. [d] A parallogram is a rectangle if one of its angles is equal to \[{{90}^{o}}\].
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