Respuesta :

akposevictor

Answer:

<BKC

Step-by-step explanation:

m<DKC = 20°

m<BKD = 70°

m<BKC = m<DKC + m<BKD (angle addition postulate)

m<BKC = 20° + 70° (Substitution)

m<BKC = 90°.

Therefore, the angle that equals 90° in the given figure is angle BKC.

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