Lines And Angles CBSE Questions & Answers
Lines And Angles
This is Mathematics Class 09 Lines and Angles CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
In the adjoining figure, if m \(\parallel \) n, then \(\angle \)4 + \(\angle \)7 is equal to –

- A180\(^0\)Correct
- B90\(^0\)
- C150\(^0\)
- D120\(^0\)
2
In the adjoining figure, m \(\parallel \) n, if \(\angle \)1 = 50\(^0\), then \(\angle \)2 is equal to –

- A50\(^0\)
- B120\(^0\)
- C130\(^0\)Correct
- D40\(^0\)
3
In the adjoining figure, m \(\parallel \) n. If \(\angle \)a : \(\angle \)b = 2 : 3, then the measure of \(\angle \)h is –

- A72\(^0\)
- B150\(^0\)
- C120\(^0\)
- D108\(^0\)Correct
4
In the adjoining figure, AB \(\parallel \) CD and AB \(\parallel \) EF. The value of x is :-

- A60\(^0\)Correct
- B50\(^0\)
- C70\(^0\)
- D40\(^0\)
5
In the adjoining figure, if AB \(\parallel \) DE, then the measure of \(\angle \)ACD is :-

- A100\(^0\)Correct
- B80\(^0\)
- C90\(^0\)
- D70\(^0\)
6
In the adjoining figure , the value of x is :-

- A40\(^0\)Correct
- B45\(^0\)
- C30\(^0\)
- D35\(^0\)
7
In the adjoining figure, the measure of \(\angle \)AED is :-

- A140\(^0\)
- B120\(^0\)
- C130\(^0\)Correct
- D110\(^0\)
8
In the adjoining figure, if QP \(\parallel \) RT, then x is equal to –

- A70
- B65
- C55
- D75Correct
9
In the adjoining figure, l \(\parallel \) m then \(\angle \)x is equal to –

- A61\(^0\)
- B56\(^0\)Correct
- C51\(^0\)
- D66\(^0\)
10
A, B, C are the three angles of a triangle. If A – B = 15\(^0\) and B – C = 30\(^0\), then angles A, B, C are :-
- A35\(^0\), 65\(^0\), 80\(^0\)
- B80\(^0\), 35\(^0\), 65\(^0\)
- C65\(^0\), 80\(^0\), 35\(^0\)
- D80\(^0\), 65\(^0\), 35\(^0\)Correct
11
The angles of a triangle in ascending order are x, y, z and y – x = z – y = 10\(^0\). The smallest angles is :-
- A70\(^0\)
- B6\(^0\)
- C50\(^0\)Correct
- D40\(^0\)
12
In the adjoining figure PQ \(\parallel \) SR. If QP \( \bot \) SP, then the values of x and y are :-

- Ax = 43\(^0\), y = 47\(^0\)
- Bx = 53\(^0\), y = 37\(^0\)Correct
- Cx = 63\(^0\), y = 27\(^0\)
- Dx = 37\(^0\), y – 53\(^0\)
13
In the adjoining figure, the three lines AB, CD and EF all pass through the point O. If \(\angle \)EOB = 90 and x : y = 2 : 1 then \(\angle \)BOD and \(\angle \)COE :-

- A30, 60Correct
- B45, 45
- C80, 20
- D60, 60
14
In the adjoining figure \(\angle \)QPR = 62\(^0\) and \(\angle \)PRQ = 64\(^0\). If OQ and OR and bisectors of \(\angle \)PQR and \(\angle \) PRQ respectively, then \(\angle \)OQR and \(\angle \)QOR :-

- A121, 20
- B26, 124
- C27, 121Correct
- D20, 80
15
In the adjoining figure, AB \(\parallel \) CD and AB \(\parallel \) EF. If EA \( \bot \) BA and \(\angle \)BEF = 55\(^0\), then the values of x, y and z :-

- A35, 125, 120
- B60, 60, 60
- C125, 125, 35Correct
- D120, 130, 25