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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 35

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 35
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 35
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 21° =
  2. Complement of 72° =
  3. Complement of 42° =
  4. Complement of 35° =
  5. Complement of 77° =
  6. Complement of 57° =
  7. Complement of 46° =
  8. Complement of 44° =
  9. Complement of 28° =
  10. Complement of 58° =
  11. Complement of 67° =
  12. Complement of 47° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 35
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 15° =
  2. Supplement of 29° =
  3. Supplement of 116° =
  4. Supplement of 118° =
  5. Supplement of 163° =
  6. Supplement of 27° =
  7. Supplement of 108° =
  8. Supplement of 164° =
  9. Supplement of 25° =
  10. Supplement of 16° =
  11. Supplement of 35° =
  12. Supplement of 68° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 35
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 39° and 52°. Find the third angle.
  2. A triangle has angles 82° and 66°. Find the third angle.
  3. A triangle has angles 71° and 24°. Find the third angle.
  4. A triangle has angles 71° and 46°. Find the third angle.
  5. A triangle has angles 29° and 23°. Find the third angle.
  6. A triangle has angles 78° and 48°. Find the third angle.
  7. A triangle has angles 35° and 55°. Find the third angle.
  8. A triangle has angles 93° and 28°. 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.