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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 67

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 67
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 67
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 36° =
  2. Complement of 17° =
  3. Complement of 60° =
  4. Complement of 65° =
  5. Complement of 25° =
  6. Complement of 39° =
  7. Complement of 62° =
  8. Complement of 64° =
  9. Complement of 19° =
  10. Complement of 12° =
  11. Complement of 80° =
  12. Complement of 72° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 67
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 20° =
  2. Supplement of 115° =
  3. Supplement of 158° =
  4. Supplement of 133° =
  5. Supplement of 21° =
  6. Supplement of 49° =
  7. Supplement of 65° =
  8. Supplement of 66° =
  9. Supplement of 55° =
  10. Supplement of 100° =
  11. Supplement of 71° =
  12. Supplement of 109° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 67
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 45° and 27°. Find the third angle.
  2. A triangle has angles 39° and 52°. Find the third angle.
  3. A triangle has angles 92° and 56°. Find the third angle.
  4. A triangle has angles 80° and 30°. Find the third angle.
  5. A triangle has angles 72° and 60°. Find the third angle.
  6. A triangle has angles 55° and 51°. Find the third angle.
  7. A triangle has angles 53° and 21°. Find the third angle.
  8. A triangle has angles 50° and 94°. 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.