Question

Find the values of the unknown angles marked with letters. 50 points!!!!!!!

a ?
b ?
c ?
d ?

Answer 1

• a=115°(Alternate interior angles)
• b=70°(Alternate interior angles

C:-

`\\ \sf\longmapsto c+115=180`

`\\ \sf\longmapsto c=180-115`

`\\ \sf\longmapsto c=65°`

D:-

`\\ \sf\longmapsto d+70=180`

`\\ \sf\longmapsto d=180-70`

`\\ \sf\longmapsto d=110°`

Answer 2

• a = 115°, alternate interior angles are congruent
• b = 70°, same as above
• c = 180° - 115° = 65°, angles forming a straight angle are supplementary
• d = 180° - 70° = 110°, same as above