Classifying Angles
Acute
What is the name of an angle less than 90o?
Triangles that have all sides equal
equilateral triangles
3
The number of sides (or angles) in a triangle
Which Mathematician has a Theorem about triangles named after him?
Pythagoras
Right angle
What is the name of an angle equal to 90 degrees
Triangles that have no equal sides
scalene triangles
What is the measure of each interior angle of an equilateral triangle?
60 degrees
Square root
What is the opposite of squaring
Reflex
What is the name of an angle between 180 and 360 degrees?
Triangles that have two equal sides
isosceles triangles
The little square in the corner of a triangle or any figure represents what?
A right angle
Degrees
What unit is used to measure angles
Obtuse angle
What is an angles greater than 90 degrees but less than 180 degrees called?
Which triangle has a 90 degree angle?
Right Angled Triangle
Can a triangle have these angle measures?
30, 60, 90.
Yes they add up to 180.
Two pairs of parallel lines, each pair are equal in length AND
All angles are 90 degrees
The number of degrees total in a triangle
180 degrees
Triangles that have three angles less than 90 degrees
acute triangles
What are the 3 types of triangles by sides.
Scalene, Equilateral, Isosceles
Samos
Where was Pythagoras born?
Supplementary
What is the name of angles that are equal to 180 degrees?
Triangles that have one angle greater than 90 degrees
obtuse triangles
Angles which add to 90 degrees are called
complementary
Sine, Cosine and Tangent
Name the three commonTrigonometric (trig) ratios)