Types of Angles
Angles that are less than 90 degrees
Acute angles
The sum of all 3 angles of a triangle
180 degrees
From the center of a circle to any edge
Radius
Length x Width x Height
Volume
The cross section of a cone that is sliced parallel to the base
A circle
Angles that are more than 90 degrees
Obtuse angles
All 3 angles and all 3 sides equal on a triangle
Equilateral Triangle
From edge to edge through the center of a circle
Diameter
1/2 x Base x Height
Area of a Triangle
The cross section of a cube that is sliced parallel to the base
A square
Two names for a 90 degree angle
Right angle and Complementary angle
When 2 angles and 2 sides are equal on a triangle
Isosceles Triangle
The term for 3.14 or 22/7
Pi
Area of a Circle
The cross section of a slice through the center of a sphere
A circle
Supplementary and Angles on a line
When no angles or no sides are equal on a triangle
Scalene Triangle
Circumference of a circle with a radius of 5
31.42 or 31.40
Circumference of a Circle
The cross section of a cylinder sliced perpendicular to the base.
A rectangle
Angles that are opposite and congruent
Vertical Angles
The 5 triangle conditions
SSS, SAS, ASA, AAS, and SSA
Area of a circle with a diameter of 12
113.10 or 113.04
The sum of the areas of each side of a figure
Surface Area
The cross section of a slice that is perpendicular to the base and goes through the vertex of a triangular prism
A triangle