pls help 4 100 points in geometry i will giv brainliest

Answer:
a = 35
c = 85
Step-by-step explanation:
85 + 60 + a = 180 as they are all supplementary angles (together they form an angle of 180°)
therefore a = 35.
a + ( 180 -(a+85)) + c =180 (as the angles of a triangle add up to 180°. our triangle is NMT, the angles are a, c and 180°-(a+85°) for a theorem about lines secant to parallel lines)
therefore c = 85
a=35°
Answer:
Solution given;
∡ZTN=85°
∡NTM=a
∡RTM=60°
∡ZTN+∡NTM+∡RTM=180°[since the sum of angle of a straight line is 180°]
substituting value
85°+a+60°=180°
a+145°=180°
a=180°-145°
a=35°
again
∡ZTN=∡TNM=85°[alternate angle]
Step-by-step explanation: