Video: Identifying the Number of Triangles in a Composite Figure

𝐴𝐡𝐢𝐷 is a rectangle where line 𝐴𝐢 and line 𝐡𝐷 are drawn. How many triangles can be found in the rectangle?

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Video Transcript

𝐴𝐡𝐢𝐷 is a rectangle where line 𝐴𝐢 and 𝐡𝐷 are drawn. How many triangles can be found in the rectangle?

We know that 𝐴𝐡C𝐷 is a rectangle. 𝐴, 𝐡, 𝐢, 𝐷, let’s connect those points: line 𝐴𝐡, line 𝐡𝐢, 𝐢𝐷, and 𝐴𝐷 or 𝐷𝐴. And two diagonal lines are drawn, lines 𝐴𝐢 and 𝐡𝐷. We have to count the number of triangles that have been made. There we have one triangle, two, three triangles, four. If lines 𝐴𝐢 and 𝐡𝐷 are drawn in rectangle 𝐴𝐡𝐢𝐷, you can find four triangles inside the rectangle.

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