Iwill give brianlest to the person who answer it write.

the function of the is to convert the up-and-down motion of the piston into rotary motion that can be used to power the vehicle.

a. piston rings
b. cylinder head
c. push rods
d. crankshaft

an engine's contains the cylinder head, the valves, the valve train components, the manifolds, and the engine covers.

a. bottom end
b. upper end
c. back end
d. lower end

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.