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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 29

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 29
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 29
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 8° =
  2. Complement of 69° =
  3. Complement of 31° =
  4. Complement of 64° =
  5. Complement of 72° =
  6. Complement of 46° =
  7. Complement of 82° =
  8. Complement of 27° =
  9. Complement of 15° =
  10. Complement of 25° =
  11. Complement of 36° =
  12. Complement of 22° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 29
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 52° =
  2. Supplement of 90° =
  3. Supplement of 23° =
  4. Supplement of 63° =
  5. Supplement of 170° =
  6. Supplement of 166° =
  7. Supplement of 140° =
  8. Supplement of 62° =
  9. Supplement of 96° =
  10. Supplement of 36° =
  11. Supplement of 74° =
  12. Supplement of 87° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 29
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 35° and 112°. Find the third angle.
  2. A triangle has angles 24° and 63°. Find the third angle.
  3. A triangle has angles 91° and 58°. Find the third angle.
  4. A triangle has angles 37° and 62°. Find the third angle.
  5. A triangle has angles 51° and 92°. Find the third angle.
  6. A triangle has angles 31° and 29°. Find the third angle.
  7. A triangle has angles 99° and 45°. Find the third angle.
  8. A triangle has angles 92° and 25°. 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.