The Basics (Junior Cert Mathematics): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
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Practise the cards
15 cards from this deck
What is a line in geometry?
What is a line in geometry?
Straight path going on forever in both directions
What is a ray (half-line)?
What is a ray (half-line)?
Starts at one point, extends forever in one direction
Key feature of a line segment
Key feature of a line segment
Has two endpoints
Acute angle range
Acute angle range
Between and
Obtuse angle range
Obtuse angle range
Between and
Reflex angle range
Reflex angle range
Larger than but less than
Right angle measure
Right angle measure
Straight angle measure
Straight angle measure
Full angle measure
Full angle measure
(a complete turn)
Vertically opposite angles property
Vertically opposite angles property
Opposite angles when two lines cross are equal
Alternate angles property
Alternate angles property
Equal angles on opposite sides of line crossing parallel lines
Corresponding angles property
Corresponding angles property
Equal angles in same position on line crossing parallel lines
Sum of interior angles in a triangle
Sum of interior angles in a triangle
Isosceles triangle properties
Isosceles triangle properties
Two equal sides and two equal angles
Equilateral triangle properties
Equilateral triangle properties
All three sides and all three angles are equal