Area and Perimeter of Triangles

Question 1

What is the area of the equilateral triangle with the length of each side equal to a?

Revolt · Accepted Answer

One-half a squared sine (60 degrees)

Question 2

base and heightSAS✔ SSS

Revolt · Accepted Answer

✔ SSS

Question 3

Area = 1/2bhtrigonometric area formula✔ Heron's formula

Revolt · Accepted Answer

✔ Heron's formula

Question 4

29.00 square units✔ 34.98 square units35.00 square units36.24 square units

Revolt · Accepted Answer

✔ 34.98 square units

Question 5

See the figure of ΔABC with auxiliary lines added. If c is the base of ΔABC, the height is . sin(A) = . The previous statement is leading to the derivation of which area formula? Area ΔABC =

Revolt · Accepted Answer

CD; Selection 1: CD; Selection 2: CD/b; Selection 3: 1/2bcsin(A)

Question 6

a/ca/bCD/a✔ CD/b

Revolt · Accepted Answer

CD/b

Question 7

1/2absin(C)1/2acsin(B)✔ 1/2bcsin(A)

Revolt · Accepted Answer

1/2bcsin(A)

Question 8

⇒ 36.7

Revolt · Accepted Answer

113754

Question 9

How much material, in square inches, is needed to make the flag?

Revolt · Accepted Answer

360; 54

Question 10

⇒ 129.82

Revolt · Accepted Answer

113757

Area and Perimeter of Triangles Answers

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