Question
Use a pair of compasses and construct the following angles:
150°
150°
✓
Answer
Steps of Construction:
- Draw a ray OA.
- With O as centre and any suitable radius draw an arc cutting OA at G.
- With G as centre and same radius cut the arc at B and then B as centre and same radius cut the arc at C. Again, with C as centre and same radius cut the arc at D.
- With C as centre and radius more than half CD draw an arc.
- With D as centre and same radius draw another arc to cut the previous arc at E.
- Join OE and produce it to F.
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|
Day
|
Mon
|
Tue
|
Wed
|
Thurs
|
Fri
|
Sat
|
Sun
|
|
Number of T.V. Sets
|
300
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400
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150
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Match the following columns on whole numbers:
|
S.No.
|
Column A
|
S.No.
|
Column B
|
|
(a)
|
137 + 63 = 63 + 137
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(i)
|
Associativity of multiplication
|
|
(b)
|
(16 × 25) is a number
|
(ii)
|
Commutativity of multiplication
|
|
(c)
|
365 × 18 = 18 × 365
|
(iii)
|
Distributive law of multiplication over addition.
|
|
(d)
|
(d) (86 × 14) × 25 = 86 × (14 × 25)
|
(iv)
|
Commutativity of addition
|
|
(e)
|
23 × (80 + 5) = (23 × 80) + (23 × 5)
|
(v)
|
Closure property for multiplication
|