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🧾 CBSE · Class 7

Class 7 Maths: A Tale of Three Intersecting Lines Worksheet (with Answers)

A free, print-ready worksheet on A Tale of Three Intersecting Lines for CBSE Class 7 Maths, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 17 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. The angles of a triangle add up to:
    • (a) 90°
    • (b) 360°
    • (c) 180°
    • (d) 270°
  2. 2. A triangle with all sides equal is:
    • (a) scalene
    • (b) isosceles
    • (c) right
    • (d) equilateral
  3. 3. Two angles are 55° and 65°. The third is:
    • (a) 60°
    • (b) 70°
    • (c) 50°
    • (d) 80°
  4. 4. A triangle with two equal sides is:
    • (a) scalene
    • (b) isosceles
    • (c) equilateral
    • (d) right
  5. 5. What is the angle sum of a triangle?
  6. 6. Name the three types of triangle by sides.
  7. 7. State and use the angle sum and exterior angle properties of a triangle.
View answers
  1. 1. (c) 180° — The angle sum of a triangle is 180°.
  2. 2. (d) equilateral — All sides equal means equilateral.
  3. 3. (a) 60° — 180 − 55 − 65 = 60°.
  4. 4. (b) isosceles — Two equal sides means isosceles.
  5. 5. 180°.
  6. 6. Equilateral, isosceles and scalene.
  7. 7. The angle sum property says the three interior angles of any triangle add up to 180°, so if two angles are known the third is found by subtracting their sum from 180°. The exterior angle property says that when a side is extended, the exterior angle equals the sum of the two interior angles opposite to it. For example, in a triangle with interior angles 50° and 60°, the third angle is 180° − 50° − 60° = 70°, and the exterior angle at that vertex equals 50° + 60° = 110°. The two properties are linked, since the exterior angle and its adjacent interior angle form a linear pair (110° + 70° = 180°).
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How it works

Every question is drawn from StudyMatic’s own Maths bank for A Tale of Three Intersecting Lines — nothing is auto-generated or invented. Pick how many of each type you want, add your own questions if you like, choose 1–4 paper sets for anti-cheating, and print the worksheet and answer key separately or save them as PDF.

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FAQ

Is this Class 7 Maths worksheet on A Tale of Three Intersecting Lines free?
Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the A Tale of Three Intersecting Lines worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 7 Maths, chapter “A Tale of Three Intersecting Lines”.