Math, asked by amar31206, 8 months ago

class ninth cbse,please fast​

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Answers

Answered by jayant6096
0

Given:

Angle ACD=110 degree

To find:

angle BAC

angle ABC

angle ACB

TO PROVE:

ANGLE SUM PROPERTY OF TRIANGLE

SOL:

Ang ACD+ Ang ACB = 180 (linear pair)

Ang ACB = 180- 110

Ang = 70

ang BAC + ang ACD= 180 (EXTERIOR ANGLE PROPERTY)

ang BAC =70 degree

ang ABC + ang BAC + ang ACB = 180 (ANGLE SUM PROPERTY OF TEAIANGLE)

ang ABC= 180 -140

ang ABC= 40

ang ABC + ang BAC + ang ACB

=40+70+70

=180

SUM OF ALL INTERIOR ANGLES OFVTRIANGLE IS 180 DEGREE .

HENCE ANGLE SUM PROPERTY IS PROVED.

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