Answer:
then r is parallel to s
Step-by-step explanation:
<3 = <11
The are same side interior angles
If same side interior angles are equal , then r is parallel to s
The letters are too little I can't see them take another picture with bigger letter and I will help you.
Answer:
35.56
Step-by-step explanation:
90,000 is the correct answer
Step-by-step explanation:
AB = AC, so mark the two sides with single tick marks.
m∠ACD = 128°, so label the angle 128°.
∠ACB is supplementary to ∠ACD, so:
m∠ACB + m∠ACD = 180°
m∠ACB + 128° = 180°
m∠ACB = 52°
ΔABC is an isosceles triangle, so m∠B = m∠ACB.
m∠B = m∠ACB
m∠B = 52°
Angles of a triangle add up to 180°, so:
m∠A + m∠B + m∠ACB = 180°
m∠A + 52° + 52° = 180°
m∠A = 76°