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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 53

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 53
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 53
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 10° =
  2. Complement of 17° =
  3. Complement of 49° =
  4. Complement of 36° =
  5. Complement of 24° =
  6. Complement of 84° =
  7. Complement of 7° =
  8. Complement of 12° =
  9. Complement of 67° =
  10. Complement of 21° =
  11. Complement of 54° =
  12. Complement of 60° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 53
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 69° =
  2. Supplement of 12° =
  3. Supplement of 112° =
  4. Supplement of 91° =
  5. Supplement of 106° =
  6. Supplement of 87° =
  7. Supplement of 71° =
  8. Supplement of 16° =
  9. Supplement of 84° =
  10. Supplement of 122° =
  11. Supplement of 97° =
  12. Supplement of 143° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 53
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 74° and 66°. Find the third angle.
  2. A triangle has angles 76° and 41°. Find the third angle.
  3. A triangle has angles 48° and 69°. Find the third angle.
  4. A triangle has angles 35° and 45°. Find the third angle.
  5. A triangle has angles 40° and 20°. Find the third angle.
  6. A triangle has angles 81° and 52°. Find the third angle.
  7. A triangle has angles 69° and 57°. Find the third angle.
  8. A triangle has angles 87° and 58°. 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.