SQA National 5 Maths Basic geometry terms
This page covers the following topics:
1. Angles at a point
2. Angles at a point on a straight line
3. Vertically opposite angles
4. Alternate angles
5. Corresponding angles
The sum of the angles at a point is 360º. This property can be used to find the value of missing angles.
The sum of the angles at a point on a straight line is 180º. This property can be used to find the value of missing angles.
Vertically opposite angles are angles which are opposite each other at a point. These angles are equal.
Given two parallel lines, the marked angles on the line joining the two parallel lines are equal. These angles are called alternate angles or Z angles.
The angles between two parallel lines and a third intersecting lines, as shown on the diagram, are equal. These angles are called corresponding angles or F angles.
State all the pairs of vertically opposite angles on the given diagram.
Calculate the value of y.
Calculate the value of angle a.
Find the value of b, given that d = 78º and f = 83º.
Use alternate angles to find the value of θ.
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