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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 74

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 74
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 74
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 77° =
  2. Complement of 81° =
  3. Complement of 36° =
  4. Complement of 42° =
  5. Complement of 76° =
  6. Complement of 15° =
  7. Complement of 22° =
  8. Complement of 40° =
  9. Complement of 58° =
  10. Complement of 83° =
  11. Complement of 17° =
  12. Complement of 61° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 74
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 38° =
  2. Supplement of 136° =
  3. Supplement of 91° =
  4. Supplement of 129° =
  5. Supplement of 11° =
  6. Supplement of 47° =
  7. Supplement of 12° =
  8. Supplement of 162° =
  9. Supplement of 150° =
  10. Supplement of 74° =
  11. Supplement of 65° =
  12. Supplement of 45° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 74
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 41° and 88°. Find the third angle.
  2. A triangle has angles 69° and 57°. Find the third angle.
  3. A triangle has angles 23° and 110°. Find the third angle.
  4. A triangle has angles 85° and 35°. Find the third angle.
  5. A triangle has angles 95° and 38°. Find the third angle.
  6. A triangle has angles 35° and 74°. Find the third angle.
  7. A triangle has angles 58° and 50°. Find the third angle.
  8. A triangle has angles 41° and 89°. 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.