Question

10) In the given figure, ABC is an equilateral triangle,
where the base BC lies on the line RS. Through A,
a line PQ is drawn parallel to RS. Find the
measures of angles 1, 2 and 3. Give explanations
for your answers.​

Answer 1

1=60

2=3=120

Step-by-step explanation:

1=60 (alternate interior angle)

2=3=120 (they are exterior angle

hence their opp. angle sum is their angle measure)

2=3 (as it's a equilateral angle so both opp. sides are equal)