Triangle Formulas

Question 1

How do you find a missing angle in a Triangle?

Answer 1

add the values given and set it equal to 180 
E.G - 35+45+x=180
80+x=180
80/180
x=100

Question 2

How do you find the Area of a triangle?

Answer 2

1/2(base)(height)

e.g - 1/2 (8)(5)= 20

Question 3

What is special about an Isosceles Triangle

Answer 3

has two equal sides

Question 4

How do you work with similar triangles?

Answer 4

corresponding angles are equal and corresponding sides are proportional

Question 5

How do you find the Hypotenuse or Leg of a right triangle?

Answer 5

Pythagorean Theorem
a squared +b squared= C squared/
a and b are the legs

Question 6

How do you spot Special Right Triangles?

Answer 6

30,60,90 degrees, also seen as 1,2,Square root 3