Geometry (angles, lines) with images — Year 4 / Grade 4 free online worksheet
Types of angles and lines. A right angle is exactly 90°. This Year 4 / Grade 4 worksheet has 12 questions in three short sections (Section A — Pick the correct answer; Section B — Fill in the blanks; Section C — Think and answer). Attempt it online — it is marked the moment you finish and shows the correct answer for anything missed.
Free · attempted online · no download
Q1. Which angle is a right angle?
Q2. Which angle is obtuse (more than 90° but less than 180°)?
Q3. Which pair of lines is parallel?
Q4. Which pair of lines is perpendicular?
Q5. A right angle measures °
Q6. A straight angle measures °
Q7. An angle smaller than 90° is called an angle.
Q8. A triangle has angles.
Q9. When two straight lines cross, angles are formed.
Q10. Which of these shows a right angle in real life?
Q11. Lines that never meet, no matter how far they go, are called
Q12. How many right angles are there in a square?
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