Question

In the figure PQ = PR, then the value of
angle Q is
80
​

Answer 1

Answer:

pq is equal to pr means it's isosceles triangles

so the base angles will be equal

therefore q is equal to 80

Answer 2

Answer:

angle Q=50°

Step-by-step explanation:

Given that :

In ∆PQR, PQ=PR and angle P =80°

We know that "the angles opposite to equal sides in a triangle are equal".

PQ=PR=>angle Q= angle R

Let angle Q and angle R=x°

We know that " the sum of all angles in a triangle is 180°

angle P+angle Q + angle R=180°

=80°+x°+x°=180°

=>80°+2x=180°

=>2x=180°-80°

=>2x=100°

=>x=100°/2

=>x=50°

angle R =50°

angleQ=50°