Math, asked by titaderoblesp7b3d8, 1 year ago

FIND THE VALUE OF X

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Answered by Anonymous

Heya....

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The exterior angle of triangle is given ;

5x+13

We know that, Exterior angle + Interior Angle = 180

Putting values in above formula,

5x+13 + 3x+7 =180

8x + 20 = 180

8x = 180-20

8x = 160

x = 160/80

x= 20 degree

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Hope This Helps......

Thanks.....

:-)

Anonymous: Where?
Please tell me i will edit ^_^

Raghav3333: We know that, Exterior angle = Sum of 2 opposite angles ,it is correct but this formula should not be put here

Raghav3333: then what is the use of isocels triangle given in the diagram?

Raghav3333: so u should use exterior angle property =exterior angle+interior angle = 180

ria113: bro edit pls

Anonymous: Ok wait

Anonymous: Please Report & delete my answer

Anonymous: i cant understand where & what to edit

Anonymous: ^^"

ria113: now perfect bro.. gud

Answered by Raghav3333

hye

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2) diagram 2

it is an isoceles triangle because two sides are equal.

if sides are equal then angles will lso be equal

so let the two base angles be x

lest form a equation

=>x+x+30 = 180

2x+30=180

2x = 180-30

2x = 150

x = 150/2 = 75 degrees

∴x = 75 degrees

1)first diagram

3X +7 IS IN right side

t is an isoceles triangle because two sides are equal.

if sides are equal then angles will lso be equal

so 3X +7 IS IN left side also

5x + 13 is exterior angle

lets recall

exterior angle+interior angle = 180

=>5x + 13 +3X +7 should be 180

=>8x +20 =180

=>8x =180-20

=>8x = 160

=>x = 20

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hope it helps u.......

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