Answer: [C]: "All rectangles are quadrilaterals."
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Answer: You too whos next
Man.
Answer:
The area of triangle is 
Step-by-step explanation:
It is given that AB=19cm, BC=12cm and ∠B=105°
Now, Area of the triangle ABC=
=
=
=
Thus, the area of triangle is
Answer:
E
Step-by-step explanation:
All would affect the population. A) because more predators would eat more prey affecting the population. B) because less resources would cause struggle to survive and death affecting the population. C) because if the population goes up that could cause more pray. D) because if there a change in death rate it could depend how much predators or prey would thrive when it comes to food.
Use Pythagoras theorem：
It can be used in any right triangle
