# Maths

Mind Map by ng mabel, updated more than 1 year ago
 Created by ng mabel about 5 years ago
11
1

### Description

GCE O-Level EMathematics Mind Map on Maths, created by ng mabel on 07/21/2016.

## Resource summary

Maths
1. angle properties
1. straight line=180
1. at a point=360
1. vertically opp are equal
1. alternate interior/exterior are equal
1. corresponding are equal
2. regular polygon
1. sum of interior angles = (n+2)x180 *if only one angle then divide by n
1. sum of ext = 360
2. shapes
1. congruent figures
1. SSS
1. RHS
1. AAS
1. SAS
2. bearings
1. measure clockwise from north direction
1. both sides on a straight line with bearing=180
2. proportion
1. direct : y=kx
1. inverse : y=k/x
2. graph
1. eq of line : y= mx+c
1. perpendicular: m1 x m2=-1
2. cirlces
1. arc length
1. degree
2. area of sector
1. degree
2. trigonometry
1. right-angled tri. : TOA CAH SOH
1. REMEMBER!!
1. in formula list

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