Show:
Diagonals
Polygons
Angle measure
Vocabulary
Polygon Vocab
100
How many diagonals does a triangle have?
0
100
What is a polygon with 3 sides called?
Triangle
100
What do we call angles that measure less than 90 degrees?
Acute
100
What do we call a flat surface?
Plane
100
What do we call polygons with all congruent sides?
Equilateral
200
How many diagonals does a pentagon have?
5
200
What is a polygon with 5 sides called?
Pentagon
200
What do we call angles that measure greater than 90 degrees?
Obtuse
200
What is the geometric term for equal? Also, draw the symbol.
Congruent ~ =
200
What do we call polygons with all congruent sides and congruent angles?
Regular polygons
300
How many diagonals does an octagon have?
20
300
What is a polygon with 10 sides called?
Decagon
300
What is the term for angles that measure exactly 90 degrees?
Right angles
300
What do we call angles that are next to each other?
Adjacent angles
300
What do we call polygons with all congruent angles?
Equiangular
400
How many diagonals does a dodecagon have?
54
400
What is a polygon with 6 sides called?
Hexagon
400
What do we call angles that sum to 90 degrees?
Complementary
400
What do we call angles that share a vertex, share a side, and their uncommon side forms a line?
Linear Pair
400
What do we call polygons with at least one diagonal outside the shape?
Concave
500
What do diagonals connect? (Be specific)
Two nonconsecutive vertices
500
What is a polygon with 12 sides called?
Dodecagon
500
What do we call angles that sum to 180 degrees?
Supplementary
500
What do we call angles that share a vertex, are congruent, but share no sides?
Vertical angles
500
What do we call polygons with all diagonals inside the shape?
Convex