1.

ABC is a right angle triangle angle A = 90 degree and AB = AC find angle B and angle C. (having no figure )​

Answer»

Step-by-step EXPLANATION:

Since AB=AC,

So, △ABC is Right-angled isosceles.

∠B=∠C ...(angles opp. to equal SIDES are equal)

∠A+∠B+∠C=180

∘

...(angle - SUM PROPERTY of a TRIANGLE)

Substituting ∠B=∠C, ∠A=90

o

90

∘

+2∠B=180

∘

2∠B=180

∘

–90

∘

=90

∘

⇒∠B=45

∘

So, ∠C=∠B=45


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