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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 87

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 87
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 87
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 83° =
  2. Complement of 22° =
  3. Complement of 67° =
  4. Complement of 41° =
  5. Complement of 50° =
  6. Complement of 68° =
  7. Complement of 53° =
  8. Complement of 64° =
  9. Complement of 23° =
  10. Complement of 54° =
  11. Complement of 32° =
  12. Complement of 85° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 87
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 31° =
  2. Supplement of 147° =
  3. Supplement of 78° =
  4. Supplement of 165° =
  5. Supplement of 43° =
  6. Supplement of 23° =
  7. Supplement of 77° =
  8. Supplement of 48° =
  9. Supplement of 123° =
  10. Supplement of 156° =
  11. Supplement of 88° =
  12. Supplement of 116° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 87
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 26° and 34°. Find the third angle.
  2. A triangle has angles 90° and 47°. Find the third angle.
  3. A triangle has angles 49° and 56°. Find the third angle.
  4. A triangle has angles 28° and 118°. Find the third angle.
  5. A triangle has angles 99° and 36°. Find the third angle.
  6. A triangle has angles 51° and 71°. Find the third angle.
  7. A triangle has angles 85° and 38°. Find the third angle.
  8. A triangle has angles 43° and 45°. 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.