Educational worksheet on lines and angles, featuring matching exercises and angle classification based on degree measurements.

Let’s solve this step by step.

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Part 1: Match each word with the correct statement.

We’ll go one by one:

(i) Point
→ A point is an exact location in space — no size, just a spot.
✔ Matches b)

(ii) Line Segment
→ Has two endpoints — it’s a piece of a line between two points.
✔ Matches f)

(iii) Angle
→ Formed when two rays meet at a vertex (the corner point).
✔ Matches c)

(iv) Ray
→ Starts at one point and goes on forever in one direction → has one endpoint.
✔ Matches a)

(v) Plane
→ Flat surface that goes on forever in all directions — like an infinite sheet.
✔ Matches d)

(vi) Perpendicular Lines
→ Cross to form right angles (90°).
✔ Matches g)

(vii) Parallel Lines
→ Never meet, always same distance apart, same direction.
✔ Matches e)

*(Note: Option h says “two or more lines that cross or meet each other at a point” — that’s intersecting lines, but we don’t have that term here, so it’s unused.)*

So matching:

- (i) → b
- (ii) → f
- (iii) → c
- (iv) → a
- (v) → d
- (vi) → g
- (vii) → e

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Part 3: Classify angles as acute, obtuse, right, straight, or reflex.

Remember:

- Acute: less than 90°
- Right: exactly 90°
- Obtuse: between 90° and 180°
- Straight: exactly 180°
- Reflex: greater than 180° but less than 360°

Now check each:

a) 320°
→ Greater than 180°, less than 360° → reflex

b) 108°
→ Between 90° and 180° → obtuse

c) Right angle symbol (square corner)
→ That means 90° → right

d) 181°
→ Just over 180° → still less than 360° → reflex

e) 87°
→ Less than 90° → acute

f) 351°
→ Very close to 360°, but still under → reflex

Wait — let me double-check d) and f):

- Reflex = >180° and <360° → yes, both 181° and 351° are reflex.
- Straight is ONLY 180° — so 181° is NOT straight.

All good.

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Final Answer:

Matching:

(i) b
(ii) f
(iii) c
(iv) a
(v) d
(vi) g
(vii) e

Angle Classification:

a) reflex
b) obtuse
c) right
d) reflex
e) acute
f) reflex