Question

Find 'x'in the following figures? ​

Answer 1

Step-by-step explanation:

In triangle the sum of angles is equal to 180°

so •°• Â+angle B+angle C =180°

angle A=25°

angle C=30°

angle B=X

•°• the sum of angles =angle A+angle B+ angle C

=》 180°=25°+X+30°

=》180°=55°+X

=》180°-55°=X

=》135°=X

•°• angle B= 135°

Answer 2

Answer:

i) x°=67°

ii) x°=125°

Step-by-step explanation:

i) As exterior angle of a triangle is equal to sum of it's interior opposite angles,

So, 123°=56°+x°

→x°=123°-56°

→x°=67°

ii) As the sum of all the interior angles of a triangle is equal to 180°,

So, 25°+30°+x°=180°

→x°=180°-30°-25°

→x°=125°

Hope it helps you...

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