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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 84

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 84
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 84
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 13° =
  2. Complement of 58° =
  3. Complement of 78° =
  4. Complement of 42° =
  5. Complement of 19° =
  6. Complement of 26° =
  7. Complement of 60° =
  8. Complement of 37° =
  9. Complement of 76° =
  10. Complement of 61° =
  11. Complement of 17° =
  12. Complement of 16° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 84
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 23° =
  2. Supplement of 54° =
  3. Supplement of 27° =
  4. Supplement of 145° =
  5. Supplement of 81° =
  6. Supplement of 34° =
  7. Supplement of 137° =
  8. Supplement of 163° =
  9. Supplement of 35° =
  10. Supplement of 42° =
  11. Supplement of 144° =
  12. Supplement of 133° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 84
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 80° and 43°. Find the third angle.
  2. A triangle has angles 77° and 29°. Find the third angle.
  3. A triangle has angles 90° and 34°. Find the third angle.
  4. A triangle has angles 39° and 108°. Find the third angle.
  5. A triangle has angles 92° and 24°. Find the third angle.
  6. A triangle has angles 96° and 54°. Find the third angle.
  7. A triangle has angles 83° and 64°. Find the third angle.
  8. A triangle has angles 95° and 31°. 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.