ewencel3 ewencel3

15-04-2021
Mathematics

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if ABCD is a rectangle find angle ABD

if ABCD is a rectangle find angle ABD class=

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minhaoh minhaoh

15-04-2021

Answer:

61 degrees

Step-by-step explanation:

First, find x. CBD=BDA

x+18=4x-15

x=11

Four interior angles of a rectangle are all 90 degrees. So to find ABD, subtract CBD from 90 degrees. So 90-29=61 degrees.

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