Question

in ∆PQR,if PQ = QR and <Q = 100° ,then < R is equal to
40 degree
80
120
50​

Answer 1

given pq is equal to qr

angle q is equal to 100

angle p is equal to angle q because it is given that pq is equal to qr means it isceles triangle

so base angles are equal

angle q + angle p + angle r =180 angle sum property

substitute angle p and angle r as x

q +x+x=180

q+2x=180

100+2x =180

2x=180-100

2x=80

x=80÷2

x=40

there fore angle r is 40

Answer 2

Answer:

40⁰

Step-by-step explanation:

∆PQR IS ISOSCELES TRIANGLE SO;

angR=angP

I hope you understand..