Question

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Answer 1

Answer. <XOZ = (180-45)°

= 135°

as <XOZ and <ZOY are linear pairs.

Answer 2

Answer:

1. i. 90° -62°= 28° ; ii. 90°- 43°= 47°

Step-by-step explanation:

this way in all questions of q no. 1 subtract from 90°, because sum of two angles form 90° , which is termed as complementary angle. each of them are called complement of other.

2. i. 180°- 110°= 70°

here in all questions subtract from 180°. because here sum of two angles form 180° , which is termed as supplementary angle. each of them are called supplement of other.

3. aoc = cod; cod= doe; doe= eod

adjacent angle which has one common arm.

4. i. POR= ROQ; POR= POS

II. POS= ROQ; POR= SOQ

5. XOZ = 180°- 45°= 135°( Linear pair means two angles sum 180)

6. I. aoc= dob

ii. coa= Aod

III. cob= bod; coa= aoe; aoe= eod; eod= dob

7. soq= 130°[vertically opposite angles]

POS= 50°( linear pair)

roq= 50° ( vertically opposite angles)

8i. x= 180°- 25°=155°( linear pair)

ii.x = 90°- 23°= 67°(complement angle)

III.soq= por

so if soq= 120° ; por =120°

x= 120°-80°= 40°

9.