MATH 1 Flashcards
STUDYING
WHAT IS A POLYGON
-2D SHAPE
-HAS STRAIGHT LINES
-FLAT OR PLANE
-TWO SIDES MEET AT THE VERTEX
TYPES OF POLYGON
-EQUILATERAL
-EQUIANGULAR
-REGULAR
-IRREGULAR
-CONVEX
-CONCAVE
EQUILATERAL POLYGON
ALL SIDES ARE CONGRUENT
REGULAR POLYGON
ALL SIDES AND ANGLES ARE CONGRUENT
EQUIANGULAR POLYGON
ALL ANGLES ARE CONGRUENT
IRREGULAR POLYGON
ALL SIDES AND ANGLES ARE NOT EQUAL
CONVEX POLYGON
INTERIOR ANGLES THAT ARE LESS THAN 180°
(ALL VERTICES WILL POINT OUTWARD)
CONCAVE POLYGON
AT LEAST ONE ANGLE ARE LESS THAN 180°
(ALL VERTICES WILL POINT INWARD)
FORMULA TO FIND THE SUM OF INTERIOR ANGLES
( N - 2) 180°
N is the number of sides
FORMULA TO FIND THE SUM OF UNKNOWN INTERIOR ANGLES
180° - the total sum of shown angles
WHAT IS ANGLES
WHEN TWO STRAIGHT LINES MEET AT AN ENDPOINT
TYPES OF ANGLES
-COMPLEMENTARY
-SUPPLEMENTARY
-ADJACENT
-LINEAR PAIR
-VERTICAL
COMPLEMENTARY ANGLES
TWO ANGLES WHOSE SUM IS 90°
SUPPLEMENTARY ANGLES
TWO ANGLES WHOSE SUM IS 180°
ADJACENT ANGLES
TWO ANGLES THAT SHARE THE SAME SIDE AND VERTEX, DO NOT OVERLAP