Vidaara.orgClass 7 · Mathematics
CodeVID-M7-08-CT
Angles in Parallel Lines & Triangles — Full Chapter Test
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- This is a full-length test covering the whole chapter — every topic is included.
- All questions are compulsory.
- Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
- Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions
5 × 1 = 5 marks
1.
Corresponding angles (parallel lines + transversal) are:
- A.supplementary
- B.equal
- C.complementary
- D.zero
2.
The angle sum of a triangle is:
- A.$90^\circ$
- B.$180^\circ$
- C.$270^\circ$
- D.$360^\circ$
3.
Alternate interior angles are:
- A.equal
- B.supplementary
- C.complementary
- D.unequal
4.
An exterior angle equals the sum of the two:
- A.adjacent angles
- B.opposite interior angles
- C.right angles
- D.exterior angles
5.
Co-interior angles sum to:
- A.$90^\circ$
- B.$180^\circ$
- C.$360^\circ$
- D.$45^\circ$
Section B — Short Answer (2 marks)
4 × 2 = 8 marks
6.
Two parallel lines are cut by a transversal; one angle is $70^\circ$. Find its corresponding angle.
7.
Two angles are $40^\circ$ and $75^\circ$. Find the third.
8.
An exterior angle is $120^\circ$. The two opposite interior angles sum to:
9.
Co-interior angles are $110^\circ$ and $x$. Find $x$.
Section C — Short Answer (3 marks)
4 × 3 = 12 marks
10.
One angle is $120^\circ$. Find its co-interior angle.
11.
An exterior angle is $110^\circ$ and one opposite interior angle is $45^\circ$. Find the other.
12.
Two parallel lines; an alternate angle is $55^\circ$. Find the matching angle.
13.
The angles of a triangle are in ratio $2:3:4$. Find them.
Section D — Long Answer (5 marks)
2 × 5 = 10 marks
14.
Two parallel lines are cut by a transversal and one of the eight angles is $75^\circ$. Find the corresponding, alternate and co-interior angles.
15.
The angles of a triangle are $x,\ (x+10),\ (x+20)$. Find all three.
Answer Key
Section A — Multiple Choice Questions
- (B) equal
- (B) $180^\circ$
- (A) equal
- (B) opposite interior angles
- (B) $180^\circ$
Section B — Short Answer (2 marks)
- $70^\circ$.
- $65^\circ$.
- $120^\circ$.
- $70^\circ$.
Section C — Short Answer (3 marks)
- $60^\circ$.
- $65^\circ$.
- $55^\circ$.
- $40^\circ, 60^\circ, 80^\circ$.
Section D — Long Answer (5 marks)
- Corresponding $75^\circ$; alternate $75^\circ$; co-interior $105^\circ$.
- $50^\circ, 60^\circ, 70^\circ$.
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