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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 91

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 91
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 91
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 85° =
  2. Complement of 5° =
  3. Complement of 72° =
  4. Complement of 66° =
  5. Complement of 43° =
  6. Complement of 22° =
  7. Complement of 20° =
  8. Complement of 60° =
  9. Complement of 83° =
  10. Complement of 46° =
  11. Complement of 29° =
  12. Complement of 70° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 91
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 24° =
  2. Supplement of 120° =
  3. Supplement of 116° =
  4. Supplement of 45° =
  5. Supplement of 104° =
  6. Supplement of 10° =
  7. Supplement of 111° =
  8. Supplement of 44° =
  9. Supplement of 55° =
  10. Supplement of 37° =
  11. Supplement of 161° =
  12. Supplement of 31° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 91
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 84° and 44°. Find the third angle.
  2. A triangle has angles 65° and 45°. Find the third angle.
  3. A triangle has angles 39° and 83°. Find the third angle.
  4. A triangle has angles 79° and 65°. Find the third angle.
  5. A triangle has angles 57° and 66°. Find the third angle.
  6. A triangle has angles 81° and 41°. Find the third angle.
  7. A triangle has angles 43° and 21°. Find the third angle.
  8. A triangle has angles 47° and 98°. 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.