Answer: 16%
Step-by-step explanation:
Answer:
∠ BDE = 85°
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ ABC is an exterior angle of the triangle, then
∠ C + ∠ BDC = 155
60 + ∠ BDC = 155 ( subtract 60 from both sides )
∠ BDC = 95°
∠ BDE and ∠ BDC are adjacent angles and are supplementary, thus
∠ BDE = 180° - 95° = 85°
Answer:
D
Step-by-step explanation:
AB is in the first quadrant
Coordinate points in the first quadrant are (x, y)
Under a reflection in the x- axis
a point (x, y ) → (x, - y) ← a point in quadrant 4 → D
