Answer: answer is 40 Step-by-step explanation: let angle b= x ACQ:- a+b+c = 180(angle sum property) 100 + x+x = 180(angle a = angle b (angles substituded by equal lines)) 2x = 80 x =40 hope you like it ,please mark me brainliest Reply

Answer: angle B is 40° Step-by-step explanation: STEP BY STEP EXPLANATION: Angle a=100°—-(1.) AB=AC So, angle B=angleC —–(2.) (because angles opposite to equal sides are equal.) Thus, by (1) and (2) we can conclude that angle A+angleB+angleC=180°(Angle Sum Property) so, 100+angleB+angleB=180 100+2(angle B)=180 2(angleB)=180-100 2(angle B)=80 angle B=80/2 angle B=40° ______________________☆☆ HOPE IT HELPED ^_ Reply

Answer:answer is 40

Step-by-step explanation:let angle b= x

ACQ:-

a+b+c = 180(angle sum property)

100 + x+x = 180(angle a = angle b (angles substituded by equal lines))

2x = 80

x =40

hope you like it ,please mark me brainliest

Answer:angle B is 40°

Step-by-step explanation:STEP BY STEP EXPLANATION:

Angle a=100°—-(1.)

AB=AC

So, angle B=angleC —–(2.) (because angles opposite to equal sides are equal.)

Thus, by (1) and (2) we can conclude that

angle A+angleB+angleC=180°(Angle Sum Property)

so, 100+angleB+angleB=180

100+2(angle B)=180

2(angleB)=180-100

2(angle B)=80

angle B=80/2

angle B=40°

______________________☆☆

HOPE IT HELPED ^_