Activity for DonielFâ€
Type | On... | Excerpt | Status | Date |
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Answer | — |
A: Similar triangles with the same area For a triangle defined by three points $X, Y, Z$: $$A{\triangle XYZ}=\frac12\cdot\overline{XY}\cdot\overline{YZ}\cdot\sin{\angle Y}$$ Since $A{\triangle ACD}=A{\triangle AEB}$, $$\overline{AB}\cdot\overline{BE}\cdot\sin\angle B=\overline{AC}\cdot\overline{CD}\cdot\sin\angle C$$ Since $\o... (more) |
— | over 3 years ago |