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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 61

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 61
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 61
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 50° =
  2. Complement of 27° =
  3. Complement of 52° =
  4. Complement of 46° =
  5. Complement of 26° =
  6. Complement of 43° =
  7. Complement of 65° =
  8. Complement of 48° =
  9. Complement of 29° =
  10. Complement of 24° =
  11. Complement of 51° =
  12. Complement of 10° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 61
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 143° =
  2. Supplement of 87° =
  3. Supplement of 84° =
  4. Supplement of 154° =
  5. Supplement of 166° =
  6. Supplement of 135° =
  7. Supplement of 127° =
  8. Supplement of 99° =
  9. Supplement of 14° =
  10. Supplement of 92° =
  11. Supplement of 90° =
  12. Supplement of 77° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 61
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 79° and 29°. Find the third angle.
  2. A triangle has angles 87° and 22°. Find the third angle.
  3. A triangle has angles 73° and 33°. Find the third angle.
  4. A triangle has angles 89° and 27°. Find the third angle.
  5. A triangle has angles 80° and 40°. Find the third angle.
  6. A triangle has angles 73° and 73°. Find the third angle.
  7. A triangle has angles 80° and 41°. Find the third angle.
  8. A triangle has angles 61° and 75°. 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.