Question

trianglePQR is an isosceles triangle with PQ = PR. If angleR = 42°, find the measure of angleP.
Class 7​

Answer 1

Step-by-step explanation:

we can assume both angle as X bcz both will be same. due to PQ= PR

SO WE WILL DO LIKE THAT

X+X+42°=180°

2x=180°-42°

x=138/2

x=69° will be the answer ❤️

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Answer 2

AngleR+AngleQ+Angle P= 180
As
PQ=PR angles opposite to equal sides are equal so angleR=AngleQ
2XAngleR+AngleP=180
AngleP= 180-84

AngleP= 96