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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 71

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 71
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 71
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 77° =
  2. Complement of 60° =
  3. Complement of 27° =
  4. Complement of 50° =
  5. Complement of 11° =
  6. Complement of 78° =
  7. Complement of 73° =
  8. Complement of 10° =
  9. Complement of 56° =
  10. Complement of 46° =
  11. Complement of 12° =
  12. Complement of 44° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 71
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 99° =
  2. Supplement of 128° =
  3. Supplement of 47° =
  4. Supplement of 138° =
  5. Supplement of 18° =
  6. Supplement of 162° =
  7. Supplement of 80° =
  8. Supplement of 82° =
  9. Supplement of 24° =
  10. Supplement of 11° =
  11. Supplement of 31° =
  12. Supplement of 144° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 71
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 60° and 35°. Find the third angle.
  2. A triangle has angles 88° and 31°. Find the third angle.
  3. A triangle has angles 33° and 58°. Find the third angle.
  4. A triangle has angles 59° and 91°. Find the third angle.
  5. A triangle has angles 40° and 84°. Find the third angle.
  6. A triangle has angles 79° and 34°. Find the third angle.
  7. A triangle has angles 56° and 23°. Find the third angle.
  8. A triangle has angles 82° and 68°. 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.