Cho tam giác ABC cân tại A và M là trung điểm của BC Kẻ MH và MK lần lượt vuông góc với AB và AC H thuộc AB K thuộc AC a) chứng minh tam giác MBH bằng tam giác MCK b) cho BC = 8 cm và BH = 3 cm Tính cạnh MK c) Chứng minh HK song song với BC d) cho HK = 1/2 BC TAM GIAC ABC .Khi đó tam giác ABC là tam giác gì? Vì sao?

Step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

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to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.