Question

in triangle PQR; angle Q =70°,PQ=QR therefore angle R is​

Answer 1

Answer:

By Pythagoras theorem

Step-by-step explanation:

angle P + angle Q + angle R = 180. angle P + 70 + 70 = 180.

Answer 2

Answer:

angle q is equal to 70°since,pq=qr..(given in the question)....angles opposite to eqaul side of isosceles triangle are eqaul. (we come to know that triangle pqr is isosceles from the question....pq=qr.) so angle r and angle p will be equal..we know angle sum property of a triangle using n from this property we know that sum of all 3 angles of triangle is 180..so 180-70=110...than 110 will be divided by 2 (since angle r and p is equal)

so...110÷2=55°

therefore angle r is eqaul to 55°