Question

Please help me with this im very confused

Answer 1

Explanation:

Angle sum property of triangle

1) Let the unknown angle = x

x + 43 + 90 = 180

x + 133 = 180

x = 180 -133

`\sf \boxed{\bf x = 47^\circ}`

2) x + 88 + 30 = 180

x + 118 =180

x = 180 - 118

`\sf \boxed{\bf x = 62^\circ}`

3) x + 98 + 40 = 180

x + 138 = 180

x = 180 - 138

`\sf \boxed{\bf x = 42^\circ}`