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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 45

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 45
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 45
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 31° =
  2. Complement of 33° =
  3. Complement of 47° =
  4. Complement of 78° =
  5. Complement of 34° =
  6. Complement of 24° =
  7. Complement of 41° =
  8. Complement of 11° =
  9. Complement of 51° =
  10. Complement of 82° =
  11. Complement of 36° =
  12. Complement of 23° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 45
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 92° =
  2. Supplement of 105° =
  3. Supplement of 39° =
  4. Supplement of 115° =
  5. Supplement of 28° =
  6. Supplement of 152° =
  7. Supplement of 13° =
  8. Supplement of 130° =
  9. Supplement of 55° =
  10. Supplement of 74° =
  11. Supplement of 22° =
  12. Supplement of 46° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 45
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 89° and 21°. Find the third angle.
  2. A triangle has angles 38° and 46°. Find the third angle.
  3. A triangle has angles 67° and 21°. Find the third angle.
  4. A triangle has angles 31° and 59°. Find the third angle.
  5. A triangle has angles 64° and 82°. Find the third angle.
  6. A triangle has angles 88° and 34°. Find the third angle.
  7. A triangle has angles 48° and 79°. Find the third angle.
  8. A triangle has angles 58° and 36°. 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.