Math Flashcards
What is an acute angle?
Less than 90 degrees
What is an obtuse angle
Over 90 degrees
What is a triangle?
An enclosed geometric angle with 3 sides and 3 angles
What is a right triangle?
A triangle with a right angle (90degrees)
What is a equilateral triangle
3 equal sides 3 equal angles
What is an isosceles triangle
2 equal sides and 2 equal angles
What is an oblique triangle
No angles equal to 90 degrees
What is a scalene triangle?
Three unequal sides and three unequal angles
What is the hypotenuse?
Longest side of the triangle
All three angles in a triangle add up to what?
180 degrees
Lower case letters are _________
Upper case letters are _________
Sides
Angles
The vertical side of a right triangle is called the__________
Altitude
The bottom of a right triangle is called the ________
Base
Equilateral and Isosceles triangles can be divided into two right triangles.
True or false
True
What are the 3 special triangles?
30-60-90 degree
45-45-90 degree
3-4-5
On the 30-60-90 triangle what do the sides measure
On a 45-45-90 triangle what do the side measure?
On a 3-4-5 triangle what do the side measure?
Right triangles:
Side a is opposite of angle______ and adjacent to angle ______?
A
B
On right triangles
Side b is opposite of angle ________ and side b is adjacent to angle ________?
B
A
SIN A =
Opposite
————-
Hypotenuse
COS A =
Adjacent
————-
Hypotenuse
TAN A =
Opposite
————-
Adjacent
SIN B
Opposite
————-
Hypotenuse
COS B =
Adjacent
————
Hypotenuse
TAN B =
Opposite
————-
Adjacent
SOH-CAH-TOA
SIN=opp/hyp
COS=adj/hyp
TAN=opp/adj
1000 joule is equal to _____ kilojoules
1
1 mega joule = _________ J and a_________ kilojoules
1 000 000 J
1000 Kj
