Question

in triangle abc ab =ac angle a =100 find the measures of B and C
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Answer 1

Answer:

B and C are 40°

Step-by-step explanation:

In triangle ABC,

AB=AC=x (assume)

sum of all angles of a triangle is 180°

therefore,100+AB+AC=180°

100+x+x=180°

2x=180-100

2x=80

x=80/2

x=40°

so,ANGLE B AND ANGLE C ARE SAME

SO ANGLE B AND C ARE 40° each

Answer 2

Answer:

AB=AC

angleB=angleC.....(angles opp to equal sides are equal)

In ABC,

angle A +angle B + angle C =180

100+2/_B=180

2/_B=180-100

2/_B=80

/_B=80÷2

/_B=40

/_B=/_C=40