Question

pls help in this it is angles and triangle​

Answer 1

Answer:

iii-45

a-3 and 1

b-5and 8

v

a-55 and 18

b- 60 and 117

Answer 2

(ii) Supplementary angles are 90°

Hence,

we can say that,

$\bf \implies \: (4x + \cancel 4) \degree+ (6x \cancel{- 4})\degree = 90 \degree \\ \bf \implies \: 10x\degree = 90\degree \\ \bf \implies{ \underline{ \boxed{ \bf x = 9\degree}}}$

(iii) Adjacent angles are equal to 180°

Hence,

$\bf \to y + 135 \degree \: = 180\degree \\ \bf \to \: y = 180\degree - 135\degree \\ \bf \to {\underline { \boxed{ \bf \: y = 45\degree}}}$

(iv) a) Each linear pair :-

$\bf \angle 1 \: and \:\angle2 \\ \bf\angle3 \: and \: \angle4 \\ \bf \angle5 \: and \: \angle6 \\ \bf \: \angle7 \: and \: \angle8$

b) each pair of vertically opposite angles:-

$\bf \angle \: 1 \: and \: \angle3 \\ \bf \angle2 \: and \: \angle4 \\ \bf \angle5 \: and \: \angle8 \\ \bf \angle \: 6 \: and \: \angle7$