An equilateral triangle has an altitude of 7cm. Which of the following have a proportional relationship to the altitude? Select all that apply. A. Perimeter
B. Sides
C. Angles
D. Area
E. Vertices

A. Perimeter

B. Sides

D. Area

Step-by-step explanation:

Suppose a triangle ABC has sides each of length a

formula:

The altitude of the triangle h equal to :

________

Perimeter:

Let’s P be the perimeter of the triangle ABC then P = 3a

P/h is a constant then The perimeter has a proportional relationship to the altitude

______

Sides :

h/a is a constant then The side has a proportional relationship to the altitude

______

Area :

Let A be the area of the triangle

A/h is a constant then The area has a proportional relationship to the altitude

_____

Angles :

The measure Of each angle of an equilateral triangle is always equal to 60°

60/h is not a constant then there is no proportional relationship

______

Vertices:

The vertices are points and not numbers so there is no proportional relationship.

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a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !