Copy of Complementary Angles

Author:Putu Eka Putra, rbwalker15

Adjust angle B using the slider. What happens as angle B changes? When angle B is an acute angle, what kind of angle is angle E? When angle B is a right angle, what kind of angle is angle E?

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從邊長辨認四邊形
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hysteresis_avec_JavaScript
pagina 16, es. 17
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مسألة حديقة حولها ممر
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