Question

26) If in triangle ABC angle A= angle B+ angle C then AABC is A) Acute angled triangle B) obtuse angled triangle C) Obtuse angled isosceles triangle D) right angled triangle​

Answer 1

Answer:

D Right Angled Triangle

Step-by-step explanation:

Let in a triangle ABC,the sum of two angles is equal to the third angle.

i.e. ∠A=∠B+∠C

We know that ∠A+∠B+∠C=180°

∠A+∠A=180° (∠A=∠B+∠C)

2∠A=180°

∠A=90°