Cho tam giác ABC có AB = AC. Gọi H là trung điểm của cạnh BC. a) CMR: AH là tia phân giác của BAC và góc B = góc C.
b) CMR: AH vuông góc với BC.
c) Trên tia đối của tia HA lấy điểm K sao cho HK = HA. CMR: CK //AB.

step-by-step explanation:

i am not sure sorry : c

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

c

step-by-step explanation:

think about the doctor who treated the major and the speaker in the short story "in another country." put yourself in the shoes of the doctor, and based on what you read in the story, write what you think his thoughts about the major and the speaker would be. use the following vocabulary in your response and change the form of these words as needed: detached resign withered