Geometry Vocabulary
In the word Triangle, what does the root TRI stand for in Greek?
3
What is the name of a 3-sided Polygon?
Triangle
What type of angle EQUALS 90 degrees?
A Right Angle
What type of Triangle has one 90 degree interior angle?
A Right Triangle
What is the Pythagorean Theorem formula?
A2 + b2 = c2
In the word Quadrilateral, what does the root QUAD stand for in Greek?
4
What is the name of a 4-sided Polygon?
Quadrilateral
What type of angle is LESS than 90 degrees?
An Acute Angle
What type of triangle has 3 equal interior angles?
An Equilateral Triangle
What does 52 equal?
25
In the word Bisect, what does the root BI stand for in Greek?
2
What is the name of a 5-sided Polygon?
Pentagon
What type of angle is GREATER than 90 degree?
Obtuse
What kind of triangle has the following lengths:
a = 4
b = 5
c = 10
A Scalene Triangle
What does 92 equal?
81
In the word Octagon, what does the root OCT stand for in Greek?
8
SUBTRACT: The number of sides in an Octagon from the number of sides in a triangle
5
Angle A = 40 degrees
Angle B = 50 degrees
Complementary Angles
What Type of of triangle has the following lengths:
a = 5
b = 5
c = 10
An Isosceles Triangle
If a2 + b2 = c2, then what type of triangle do you have?
A Right Triangle
In the word Equilateral, what does the root EQUI stand for in Greek?
Equal
ADD: The number of sides in a Square to the number of sides in a Nonagon
13
What angle relationship is shown? (Hint: add them together)
Angle A = 100 degrees
Angle B = 80 degrees
Supplementary Angles
If a triangle has the below interior angle measurements, what type of triangle is it?
a = 10 degrees
b = 130 degrees
c = 40 degrees
If a2 + b2 is LESS than c2, then what type of triangle do you have?
An Obtuse Triangle