Трапеция ABCD с высотой CH, AC = 10
CH = AC sin 45° = 10 * √2/2 = 5√2
AH = AC cos 45° = 10 * √2/2 = 5√2
S = (AD + BC) / 2 * CH
(AD + BC) / 2 = AH
S = AH * CH = 5√2 * 5√2 = 50
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Трапеция ABCD с высотой CH, AC = 10
CH = AC sin 45° = 10 * √2/2 = 5√2
AH = AC cos 45° = 10 * √2/2 = 5√2
S = (AD + BC) / 2 * CH
(AD + BC) / 2 = AH
S = AH * CH = 5√2 * 5√2 = 50