Answer:
Answer = 93.6
Step-by-step explanation:
frist multipy 9 x 13 to get 117 than divided it by 2 = 58.5, than times it by 3 since there is three sides.
(58.5 x 3 is 175.5)
Than for the base multipy 7.8 x 9 = 70.2, but since its a tri, divided it by 2 = 35.1.
Add 58.5 and 35.1 to get 93.6
Y° = y₁° (opposite or Vertical angles), but y₁ = 45° corresponding angles,
then y = 45°
B. if two lines are perpendicular, then they intersect to form four right angles.
Answer:
A square
Step-by-step explanation:
Answer: First answer: hexagon
second answer: triangle
Step-by-step explanation: right on edge 2020