Question

15. In the following figure. Find 1 point
x + y + z = ?
Q15
90°
O 30°
60%​

Answer 1

(a)

Sum of all interior angles of quadrilateral =360

0

∴50+130+120+x=300

x=60

0

(b)

90+a=180

a=90

Sum of all angles of quad =360

x+70+60+90=360

x=140

0

(c)

70+a=180 (Linear pair)

a=110

60+b=180 (Linear pair)

b=120

Sum of measures of all angles of pentagon =540

0

∴120+110+x+x+30=540

2x=280

x=140

0

(d)

Sum of all angles of pentagon 540

Given all angles are equal

∴5x=540

x=108

0

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Answer 2

where is figure of this question ease use camera