Chapter 8 Test🌻

Question 1

Pythagorean triple?

Answer 1

A set of nonzero whole numbers a,b, and C that satisfy the equation
A^2 + B^2 =C^2

Ex: 3,4,5
5,12,13
8,15,17
7,24,25

Question 2

Converse of Pythagorean theorem?

Answer 2

If the sum of the squares if the lengths of two sides of a triangle is equal to the square of the length of the 3rd side, then the triangle is a right triangle

Question 3

45-45-90 Triangle theorem?

Answer 3

Both legs are congruent and the length of the hypotenuse is the square root of 2 times the length of a leg

Question 4

30-60-90 triangle theorem?

Answer 4

Hypotenuse= 2 • shorter leg

Longer leg= square root of 3 •shorter leg

Question 5

What is another name of a 45-45-90 triangle?

Answer 5

Right isosceles

Question 6

Acute?

Answer 6

C^2

Question 7

Right?

Answer 7

A^2 + B^2 = C^2

Question 8

Obtuse?

Answer 8

C^2 > A^2 + B^2

Question 9

Trigonometry?

Answer 9

Comes from a Greek term

Question 10

Trigon?

Answer 10

Triangle

Question 11

Metron?

Answer 11

Measure

Question 12

Trigonometric ratio?

Answer 12

The ratio of the lengths of the sides of a right triangle

Question 13

Sine of angle a?

Answer 13

length of leg opposite <a></a>

Question 14

Cosine of <a></a>

Answer 14

Length of leg adjacent to <a></a>

Question 15

Tangent of <a></a>

Answer 15

Length of leg opposite <a></a>

Question 16

angle of elevation?

Answer 16

Line that rises up from horizontal line

Question 17

Angle of depression?

Answer 17

Angle that goes down form the horizontal line

Question 18

The Pythagorean Theorem?

Answer 18

If a triangle is a right triangle, then the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse
A^2 + B^2 = C^2