How do you work out the LCM of 2 numbers?
Find the prime factors of the first number then multiply it by the prime factors that the second number doesn’t share in common with the first number.
How do you work out the HCF of 2 numbers?
Find their common prime factors and multiply them together.
What are supplementary angles?
Two angles that add up to 180 degrees.
What are complementary angles?
2 angles that add up to 90 degrees.
What are vertically opposite angles?
The equal angles formed when two straight lines intersect.
What is a transversal?
A line that crosses two or more other lines.
What are alternate angles?
Angles that are ‘inside’ straight lines and on opposite sides of a transversal. Alternate angles are equal if the lines are parallel.
What are co-interior angles?
Angles that are ‘inside’ straight lines and on the same side of a transversal. Co-interior angles are supplementary if the lines are parallel.
What are corresponding angles?
Angles that are in corresponding (matching) positions relative to straight lines and a transversal. Corresponding angles are equal if the lines are parallel.
