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MrRissso [65]
3 years ago
11

Please help with number 12

Mathematics
2 answers:
Sliva [168]3 years ago
8 0

Answer:

61

Step-by-step explanation:

Mashutka [201]3 years ago
4 0

Answer:

Step-by-step explanation:

12)

we are told that ∠ABD = 61°

then we also know that ∠ADB = 61° b/c there are the equal legs of an isosceles triangle.

and we know by inspection that the ΔBCD is identical to ΔABD so it also has 61° angles so

∠ABC = 61 + 61 =122°

:)

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