Question
In isosceles ΔABC, the vertex angle is ∠A. What can you prove?(1 point)
Responses
m∠B = m∠C
m∠B = m∠C
∠A ≅ ∠B
∠A ≅ ∠B
BC¯¯¯¯¯¯¯¯≅AC¯¯¯¯¯¯¯¯
line segment cap b cap c is congruent to line segment cap A cap c
AB = CB
Responses
m∠B = m∠C
m∠B = m∠C
∠A ≅ ∠B
∠A ≅ ∠B
BC¯¯¯¯¯¯¯¯≅AC¯¯¯¯¯¯¯¯
line segment cap b cap c is congruent to line segment cap A cap c
AB = CB
Answers
GPT-4o mini
In an isosceles triangle ΔABC, where ∠A is the vertex angle, the key property is that the two base angles (∠B and ∠C) are equal. Therefore, the correct statement you can prove is:
**m∠B = m∠C**
This follows from the definition of an isosceles triangle, where the angles opposite to the equal sides are also equal.
**m∠B = m∠C**
This follows from the definition of an isosceles triangle, where the angles opposite to the equal sides are also equal.