Question

given:
triangle ABC is congruent to triangle DEF
ar.(ABC)=64cm sq.
ar.(DEF)=121cm sq.
EF=15.4cm
to find:
BC
​

Answer 1

Answer:

if triangles are congurant then EF =BC

Step-by-step explanation:

BC IS 15.4

Answer 2

Answer:

triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane. Wikipedia

Area: ½ × base × height

Perimeter: sum of side lengths of the triangle

Number of vertices: 3

Number of edges: 3

Internal angle: 60° (for