Question

(ii) Vertex C is common to which two triangles?​

Answer 1

To Find :- Vertex C is common to which two triangles ?

Answer :-

we know that,

• Vertex = is a corner or a point where lines meet.
• Formula to find number of vertices of a polygon is = 2 + No. of Edges - No. of Faces .
• Example :- cube has 12 edges and 6 faces, So, Number of vertices are = 2 + E - F = 2 + 12 - 6 = 14 - 6 = 8 .
• A triangle has three vertices.

Now, from image we have :-

• ∆ACB is a traingle . D is a point on side CB.

So, Vertex C is common to :-

• ∆ACB. => Lines AC and BC meets at vertex C.
• ∆ACD. => Lines AC and DC meets at vertex C.

Hence, Vertex C is common to ∆ACB and ∆ACD.

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Answer 2

Step-by-step explanation:

Vertex C is common to ∆ACB and ∆ACD