If they have the same sides and same angles then they are congruent.
Two triangles are called congruent if they have exactly the same size and shape. This can be determined by measuring all three sides of both triangles and measuring all three angles of both triangles.
The rules of geometry also tell us that we don't have to do all these measurement. Triangles have certain properties that simplify the matter. As an example, the sum of the internal angles of a triangle is 180 degrees. Therefore if two angles are known, the third angle is also known. Another is when three sides form a triangle, they only do so in one way so the angles between the sides can be determined.
There are specific rules for determining if two triangle are congruent:
Chat with our AI personalities
The triangles must be congruent.
false
A square and rectangle both have congruent triangles in them.
isosceles triangles have 2 congruent sides scalene triangles have no congruent sides equilateral triangles have 3 congruent sides
False