Question

I'm kinda lost in this problem. Can you teach me how to solve these ​

Answer 1

53) Vertical angles are congruent, so
`m\angle IDA=121^(\circ)`

54)
`\angle YDA` and
`\angle YDF` are supplementary, so
`m\angle YDA=180^(\circ)-121^(\circ)=59^(\circ)`

55) Because vertical angles are congruent,
`m\angle FDI=59^(\circ)`. Now, because DR bisects
`\angle FDI`, this means
`m\angle RDI=(59)/(2)=29.5^(\circ)`

56) This is a geometric sequence where the next term is obtained by multiplying the previous term by -2, so the next two numbers are 16, -32