Question
From the given diagram below, we can say that triangles ABC and PQR are ________.
- Right-angled triangle
- Obtuse triangle
- congruent
- Scalene triangle
Hint:
In the given question , both triangle full fill the criteria of the congruency
AAS( Two pairs of corresponding angles and one pair of corresponding side are congruent.)
The correct answer is: congruent
The two triangle have same shape and size.
In two triangle 
, we can see that 
,
and 
.
So , the two triangle are congruent by AAS rule , where A=angle,
A =angle,S=side and 
this sign means congruent.
Congruent criteria of two triangle are
1) SSS : Three pair of corresponding sides are congruent.
2) AAS : Two pair of corresponding angles and one pair of corresponding side are congruent.
3) SAS : Two pair of corresponding sides and one pair of corresponding angle are congruent.
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