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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 34

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 34
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 34
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 69° =
  2. Complement of 41° =
  3. Complement of 73° =
  4. Complement of 50° =
  5. Complement of 39° =
  6. Complement of 74° =
  7. Complement of 68° =
  8. Complement of 5° =
  9. Complement of 42° =
  10. Complement of 33° =
  11. Complement of 16° =
  12. Complement of 82° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 34
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 94° =
  2. Supplement of 19° =
  3. Supplement of 125° =
  4. Supplement of 153° =
  5. Supplement of 52° =
  6. Supplement of 61° =
  7. Supplement of 34° =
  8. Supplement of 53° =
  9. Supplement of 42° =
  10. Supplement of 95° =
  11. Supplement of 97° =
  12. Supplement of 141° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 34
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 64° and 36°. Find the third angle.
  2. A triangle has angles 96° and 40°. Find the third angle.
  3. A triangle has angles 41° and 73°. Find the third angle.
  4. A triangle has angles 48° and 58°. Find the third angle.
  5. A triangle has angles 59° and 35°. Find the third angle.
  6. A triangle has angles 77° and 72°. Find the third angle.
  7. A triangle has angles 88° and 39°. Find the third angle.
  8. A triangle has angles 85° and 65°. 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.