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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 33

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 33
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 33
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 67° =
  2. Complement of 39° =
  3. Complement of 55° =
  4. Complement of 11° =
  5. Complement of 5° =
  6. Complement of 66° =
  7. Complement of 41° =
  8. Complement of 7° =
  9. Complement of 25° =
  10. Complement of 13° =
  11. Complement of 36° =
  12. Complement of 45° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 33
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 23° =
  2. Supplement of 57° =
  3. Supplement of 147° =
  4. Supplement of 133° =
  5. Supplement of 11° =
  6. Supplement of 158° =
  7. Supplement of 144° =
  8. Supplement of 169° =
  9. Supplement of 124° =
  10. Supplement of 141° =
  11. Supplement of 36° =
  12. Supplement of 31° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 33
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 84° and 30°. Find the third angle.
  2. A triangle has angles 59° and 90°. Find the third angle.
  3. A triangle has angles 40° and 36°. Find the third angle.
  4. A triangle has angles 25° and 29°. Find the third angle.
  5. A triangle has angles 67° and 47°. Find the third angle.
  6. A triangle has angles 97° and 24°. Find the third angle.
  7. A triangle has angles 63° and 34°. Find the third angle.
  8. A triangle has angles 94° and 42°. 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.