Angles
These angles are less than 90 degrees
Acute
A three sided polygon
Triangle
This polyhedron is made up of four triangles.
Triangular pyramid
This line goes through the center of a circle and touches both sides.
Diameter
What is this called?
A--------------B--->
Ray AB
These angles are over 90 degrees and less than 180 degrees
Obtuse angles
A three sided polygon, with all sides different lengths
Scalene Triangle
How many faces does a square pyramid have?
5
Radius
What is this called?
<----------------------->
Line
These lines cross at 90 degrees forming four 90 degree angles.
Perpendicular lines
A three sided polygon, with two congruent sides and one angle over 90 degrees.
A isosceles, obtuse triangle.
How many edges does a rectangular prism have?
12
If two triangles have all angles congruent, will they always be congruent?
No, they are similar.
What is this called?
A------------------B
Line Segment AB
These angles are over 180 degrees
Reflex angle
A five sided polygon with one angle over 180 degrees
Concave Pentagon
How many vertices does a hexagonal prism have?
12
Will triangles with congruent sides lengths always be congruent.
Yes.
These lines never intersect and are on the same plane.
Parallel lines
110 degrees
A six sided shape with all angles and sides congruent
Regular hexagon
7 faces
12 edges
7 vertices
What are three types of transformations?
Reflection, translation, rotation.
This lines are on different plans and never intersect.
Skew lines