Theorems (Junior Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What is true about vertically opposite angles when two lines cross?
What is true about vertically opposite angles when two lines cross?
They are always equal
In an isosceles triangle, what is true about the angles opposite the equal sides?
In an isosceles triangle, what is true about the angles opposite the equal sides?
They are equal
When two parallel lines are crossed by another line, what are alternate angles?
When two parallel lines are crossed by another line, what are alternate angles?
Equal angles on opposite sides
What do the three angles inside any triangle always add up to?
What do the three angles inside any triangle always add up to?
What are corresponding angles when parallel lines are crossed?
What are corresponding angles when parallel lines are crossed?
Angles in same position on each line
What does an exterior angle of a triangle equal?
What does an exterior angle of a triangle equal?
Sum of two opposite interior angles
In a parallelogram, what is true about opposite sides?
In a parallelogram, what is true about opposite sides?
They are equal length
How do diagonals of a parallelogram intersect?
How do diagonals of a parallelogram intersect?
They bisect each other
If three parallel lines cut equal segments on one transversal, what happens on another?
If three parallel lines cut equal segments on one transversal, what happens on another?
They cut equal segments too
A line parallel to one side of a triangle cuts the other two sides. What does it create?
A line parallel to one side of a triangle cuts the other two sides. What does it create?
Equal ratios on those sides
What is true about the sides of similar triangles?
What is true about the sides of similar triangles?
They are proportional
In a right-angled triangle, what does Pythagoras' Theorem state about the hypotenuse?
In a right-angled triangle, what does Pythagoras' Theorem state about the hypotenuse?
What is the formula for the area of a triangle?
What is the formula for the area of a triangle?
What does a diagonal do to the area of a parallelogram?
What does a diagonal do to the area of a parallelogram?
Divides it into two equal areas
How does the angle at the centre of a circle compare to the angle at the edge on same arc?
How does the angle at the centre of a circle compare to the angle at the edge on same arc?
Centre angle is twice edge angle