How to do it ? Thanks for help

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asked Oct 19, 2019 77.1k views

1 Answer

Chen Leikehmacher · Answer 1 · 2019-10-23T21:09:30+0000

it is isosceles trapezium, so angle A=angle B,
angle C=angle D=angle BDC
triangle BCD,
180=22 +D+(D-88)
(D-88) because in trapezium C=D, angle BCD=ACD-88 or C-88, and D-88
180=2D-66
2D=180+66
2D=246
D=123

How to do it ? Thanks for help

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