2 years ago

ABC is an isoscles triangle. Angle A = 40°.

Mathematics

1 answer:

umka21 [38]2 years ago

8 0

Answer:

70 degrees

Step-by-step explanation:

total angle in a triangle is 180 degrees

180-40= 140

Angle b and c is total of 140 degrees

they are isosceles so their measurements would be same.

angle b and c is 140÷ 2 = 70

so angle b is 70 degrees

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