Area and Perimeter of Triangles

Question 1

Area = square units

Revolt · Accepted Answer

A: 13.5

Question 2

The bottom side of the flag measures 5 feet because the triangle is . Because , the trigonometric triangle formula is used to calculate that the area is (5)(5)sin(36°) ≈ 7.35 square feet. Recalling that this triangle is isosceles, we can write the area equation to solve for x.

Revolt · Accepted Answer

A: an isosceles triange

Question 3

The bottom side of the flag measures 5 feet because the triangle is . Because , the trigonometric triangle formula is used to calculate that the area is (5)(5)sin(36°) ≈ 7.35 square feet. Recalling that this triangle is isosceles, we can write the area equation to solve for x.

Revolt · Accepted Answer

C: SAS information is known

Question 4

= (x)(5)sin().

Revolt · Accepted Answer

B: 7.35

Question 5

= (x)(5)sin().

Revolt · Accepted Answer

D: 72°

Question 6

Solving for x and adding this value to the length of the other sides, the perimeter ≈ (rounded to the nearest tenth).

Revolt · Accepted Answer

B: 13.1 ft

Area and Perimeter of Triangles Answers

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