Tutorial
GCSE Maths: Basic Angle Facts
Learn the fundamental rules for angles: angles on a straight line, angles around a point, and vertically opposite angles.
Tutorial
GCSE Maths: Basic Angle Facts
Learn the fundamental rules for angles: angles on a straight line, angles around a point, and vertically opposite angles.
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Deck Contents
15 CardsLesson#1
Welcome to this deck on basic angle facts. We'll cover three fundamental rules that are the building blocks for a lot of geometry. You'll learn about angles on a straight line, angles around a point, and a special pair of angles called vertically opposite angles.
Lesson#2
Let's start with a straight line. Imagine a perfectly flat, straight line. If you pick a point on that line and draw several other lines coming out from it, all on one side, you create a set of adjacent angles. These angles always add up to a specific total.
Quiz#3
What is the sum of all the angles on one side of a straight line?
180 degrees
Lesson#4
That's right, 180 degrees. This is a crucial rule to remember. It means if you know one angle in a pair on a straight line, you can always find the other by subtracting it from 180.
Quiz#5
To find a missing angle on a straight line, what number do you subtract the known angle from?
180
Lesson#6
Next, let's think about angles around a single point. Imagine a point, and then draw several lines radiating out from it in all directions, like spokes on a wheel. These angles make a full turn.
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