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
PERCENTAGE
IS A NUMBER OR RATIO THAT CAN BE EXPRESSED AS 100
A PART PER HUNDRED
HENCE IT USES THE PERCENT SYMBOL “%”
LINEAR PAIR
A PAIR OF ADJACENT SUPPLEMENTARY
VERTICAL ANGLES
ANGLES THAT LIE OPPOSITE TOGETHER AND IT INTERSECT
TO DO INCREASE
USE A PERCENT AS A DECIMAL OR CALCULATE THE GIVEN PERCENTAGE OF THE VALUE THEN ADD TO THE ORIGINAL VALUE
CALCULATING PERCENTAGE INCREASE
NV-OV x 100%
OV
PERCENTAGE INCREASE DECREASE
IS THE CHANGE IN VALUE COMPARED TO ITS ORIGINAL VALUE
TO DECREASE
USE A PERCENT AS A DECIMAL OR CALCULATE THE GIVEN PERCENT OF THE VALUE AND THEN SUBTRACT IT FROM THE ORIGINAL
CALCULATING PERCENTAGE DECREASE
ON - SP x 100%
OV
DISCOUNT
IS A PRICE REDUCTION THAT IS BEING APPLIED TO THE ORIGINAL PRICE OF AN ITEM
