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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 65

Angles worksheets — types of angles and angle sums

Free angles worksheets for Class 4 to 7: name the type of angle (acute, right, obtuse, straight, reflex), complementary, supplementary and triangle angles — with answers.

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Types of angles (Class 4–5)Complementary angles (Class 6–7)Supplementary angles (Class 6–7)Angles of a triangle (Class 6–7)

Types of angles

Class 4–5 · Worksheet 1 · set 65
Name:Date:Score:    / 8

Name the type of the marked angle: acute, right, obtuse, straight or reflex.

  1. Type of angle?
  2. Type of angle?
  3. Type of angle?
  4. Type of angle?
  5. Type of angle?
  6. Type of angle?
  7. Type of angle?
  8. Type of angle?

Complementary angles

Class 6–7 · Worksheet 2 · set 65
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 64° =
  2. Complement of 13° =
  3. Complement of 53° =
  4. Complement of 18° =
  5. Complement of 68° =
  6. Complement of 84° =
  7. Complement of 74° =
  8. Complement of 29° =
  9. Complement of 20° =
  10. Complement of 31° =
  11. Complement of 7° =
  12. Complement of 17° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 65
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 130° =
  2. Supplement of 100° =
  3. Supplement of 134° =
  4. Supplement of 69° =
  5. Supplement of 38° =
  6. Supplement of 16° =
  7. Supplement of 163° =
  8. Supplement of 75° =
  9. Supplement of 17° =
  10. Supplement of 30° =
  11. Supplement of 137° =
  12. Supplement of 31° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 65
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 26° and 73°. Find the third angle.
  2. A triangle has angles 35° and 73°. Find the third angle.
  3. A triangle has angles 44° and 84°. Find the third angle.
  4. A triangle has angles 84° and 31°. Find the third angle.
  5. A triangle has angles 67° and 21°. Find the third angle.
  6. A triangle has angles 67° and 82°. Find the third angle.
  7. A triangle has angles 20° and 125°. Find the third angle.
  8. A triangle has angles 91° and 59°. Find the third angle.

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Questions

What are the 5 types of angles?

Acute (less than 90°), right (90°), obtuse (90°–180°), straight (180°) and reflex (180°–360°).

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.