CBSE Class 6 · Computational Thinking · 2026-27
Lines and Angles: Worksheet
Skills: Algorithmic thinking, Pattern recognition, Decomposition. Circle the correct answer. Show your working in the space beside each question.
- Four points are marked, with no three on one line. How many line segments join them in pairs?
- The minute hand moves from 12 to 4. Through what angle has it turned?
- What type of angle measures 135°?
- A robot faces North. It turns right 90°, then right 90°, then left 90°. Which way does it face now?
- Three rays OA, OB and OC start at point O, with OB between OA and OC. How many angles can be named at O?
- A robot starts facing East and repeats “turn left 90°” 7 times. Which way does it face?
Answer key: Lines and Angles
- (b) 6 – 3 + 2 + 1 = 6 segments.
- (c) 120° – 4 × 30° = 120°.
- (c) Obtuse – 135° is between 90° and 180°, so it is obtuse.
- (b) East – Left 90° → East.
- (b) 3 – That is 3 angles in total.
- (c) South – East → North → West → South.