Question

∆ABC is an isosceles triangle AB=AC if angle c =70° find angle a and b

Answer 1

Hey mate, here is your answer -:)

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$since \: AB = BC \: \: \: \: \: \: \: (given) \\ \: \: \: \: \: \: \: \: \: \angle \: b= \angle \: c \: \: \: \: \: (sides \: opposite \: to \: equal \: angles \: are \: equal) \\ \: \: \: \: \: \: \: \angle \: b \ = 70 \degree \: \\ \\ Now,\: \: In \: \triangle \:ABC \\ \: \angle \: a + \angle \: b + \angle \: c = 180 \degree \\ \angle \: a + 70 \degree + 70 \degree= 180 \degree \\ \: \: \: \: \: \: \: \: \: \: \angle \: a + 140 \degree = 180 \degree \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \angle \: a \: = 180 \degree- 140 \degree \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \angle \: a \: = 40 \degree$

Angle A = 40º
and....................
Angle B = 70º

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HOPE it helps to you!!!

Answer 2

✨hi dear....✨☺☺

✨here is ur answer...✨✌✌✌↓


$ince. AB=AC✔✔✔

angle C=angle B✔✔

✨using angle sum property...✨

A+B+C=180°
A+70°+70°=180°......{B=C}

A+140°=180°
A=180°-140°
A=40°✔✔✔✔


hence,A=40° .....✔
B=70°....……………✔✔
C=70°....……………✔✔✔


hope it helps..✌✌
please mark it as brainliest..☺☺


❤dark❤_❤love❤

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