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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 46

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 46
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 46
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 54° =
  2. Complement of 20° =
  3. Complement of 82° =
  4. Complement of 68° =
  5. Complement of 31° =
  6. Complement of 18° =
  7. Complement of 55° =
  8. Complement of 29° =
  9. Complement of 73° =
  10. Complement of 76° =
  11. Complement of 50° =
  12. Complement of 6° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 46
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 159° =
  2. Supplement of 46° =
  3. Supplement of 130° =
  4. Supplement of 81° =
  5. Supplement of 20° =
  6. Supplement of 90° =
  7. Supplement of 114° =
  8. Supplement of 21° =
  9. Supplement of 144° =
  10. Supplement of 84° =
  11. Supplement of 168° =
  12. Supplement of 99° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 46
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 69° and 39°. Find the third angle.
  2. A triangle has angles 43° and 99°. Find the third angle.
  3. A triangle has angles 29° and 84°. Find the third angle.
  4. A triangle has angles 20° and 29°. Find the third angle.
  5. A triangle has angles 49° and 76°. Find the third angle.
  6. A triangle has angles 36° and 96°. Find the third angle.
  7. A triangle has angles 59° and 20°. Find the third angle.
  8. A triangle has angles 44° and 38°. 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.