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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 27

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 27
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 27
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 84° =
  2. Complement of 9° =
  3. Complement of 37° =
  4. Complement of 32° =
  5. Complement of 47° =
  6. Complement of 35° =
  7. Complement of 61° =
  8. Complement of 20° =
  9. Complement of 6° =
  10. Complement of 29° =
  11. Complement of 73° =
  12. Complement of 12° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 27
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 27° =
  2. Supplement of 62° =
  3. Supplement of 74° =
  4. Supplement of 76° =
  5. Supplement of 16° =
  6. Supplement of 170° =
  7. Supplement of 35° =
  8. Supplement of 139° =
  9. Supplement of 147° =
  10. Supplement of 95° =
  11. Supplement of 154° =
  12. Supplement of 89° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 27
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 92° and 26°. Find the third angle.
  2. A triangle has angles 44° and 92°. Find the third angle.
  3. A triangle has angles 52° and 22°. Find the third angle.
  4. A triangle has angles 69° and 32°. Find the third angle.
  5. A triangle has angles 41° and 87°. Find the third angle.
  6. A triangle has angles 96° and 20°. Find the third angle.
  7. A triangle has angles 38° and 46°. Find the third angle.
  8. A triangle has angles 99° and 40°. 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.