The cards Question What does it mean to bisect something? Tap to flip Answer To cut or divide it into two equal parts. Question When are two lines perpendicular? Tap to flip Answer When they meet at right angles. Question What is a rhombus? Tap to flip Answer A parallelogram where all sides are the same length. Question A rhombus can be constructed from which two shapes? Tap to flip Answer Two congruent isosceles triangles. Question How do the diagonals of a rhombus meet? Tap to flip Answer At right angles, and they bisect each other. Question What do the diagonals of a rhombus do to its angles? Tap to flip Answer They bisect the angles. Question Whose properties are used to construct the perpendicular bisector of a line segment? Tap to flip Answer A rhombus's. Question When are two shapes congruent? Tap to flip Answer When one can fit exactly on top of the other using rotation, reflection or translation. Question When you construct a perpendicular, what size of angle are you constructing? Tap to flip Answer 90° Question What do you get when you bisect a 90° angle? Tap to flip Answer Two angles, each measuring 45°. Question What are complementary angles? Tap to flip Answer A pair of angles that sum to 90°. Question What are supplementary angles? Tap to flip Answer A pair of angles that sum to 180°. Question What are conjugate angles? Tap to flip Answer A pair of angles that sum to 360°. Question Which equipment is a construction done with? Tap to flip Answer A pair of compasses and a ruler (not a protractor). Question What is a pair of compasses used for? Tap to flip Answer Drawing circles and arcs. Question What is a radius of a circle? Tap to flip Answer Any line segment that joins the centre of the circle to a point on its circumference. Question What is an arc of a circle? Tap to flip Answer Part of the circle's circumference. Question When constructing a triangle from three side lengths, what are the compass arcs for? Tap to flip Answer They show the potential positions of the other two sides; the sides are drawn to where the arcs intersect. Question How are all triangles with the same three side lengths related? Tap to flip Answer They are congruent. Question In triangle congruence, what does ASA stand for? Tap to flip Answer Angle-side-angle. Question When constructing a right-angled triangle from the hypotenuse and one other side, which side is drawn first with a ruler? Tap to flip Answer The shorter side. Question When constructing a right-angled triangle from the hypotenuse and one other side, what is constructed after drawing the shorter side? Tap to flip Answer The perpendicular through the end point of the drawn side. Question When constructing a right-angled triangle, how should the right angle be made? Tap to flip Answer Constructed with a pair of compasses and a ruler, not drawn with a protractor. Question How many different triangles can be drawn from two side lengths and an angle not between them? Tap to flip Answer Two. Question What is a locus? Tap to flip Answer A set of points that satisfy a given set of conditions; multiple sets are called loci. Question What is the locus of points a set distance from a given point? Tap to flip Answer A circle. Question How is a circle described as a locus? Tap to flip Answer The locus of points equidistant from a fixed point, the centre; that distance is the radius. Question Why is the locus of points a set distance from a line segment not a rectangle? Tap to flip Answer A rectangle's corners are further from the line than the set distance, since the diagonal is longer. Question What is special about every point on the perpendicular bisector of a line segment? Tap to flip Answer It is the same distance from each end point of the line segment. Question When are points A and B equidistant from a point C? Tap to flip Answer When the distance AC equals the distance BC. Question Is there only one point equidistant from two given points? Tap to flip Answer No: any point forming an isosceles triangle with the two points is equidistant from both. Question What does the bisector of an angle do? Tap to flip Answer It divides the angle into two equal parts. Question In a loci problem, what should you do with your construction lines? Tap to flip Answer Leave them all on the diagram to show your working. Question What is a bearing? Tap to flip Answer An angle measured in degrees from North in the clockwise direction, written with three figures. Question How is an angle of 82° written as a bearing? Tap to flip Answer 082° Question What is area? Tap to flip Answer The size of a surface: the number of unit squares needed to completely cover it. Question If a shape forms a barrier (e.g. a corded lawnmower going round a corner), what may the locus include? Tap to flip Answer Sectors of different radii. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage GCSE (Years 10–11) Course GCSE Maths Unit Loci and construction Tiers foundation and higher England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Maths lesson by Oak National Academy licensed under Open Government Licence (OGL)
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