Polygons, circles and discs
identifying triangles and quadrilaterals, properties of quadrilaterals, when a triangle can be made, sides of a figure from its perimeter, radius and diameter, a circle inscribed in a square, lines of symmetry
Exercises are drawn at random from a large bank - every click gives a different set.
Solved: 0 of 10
Problem
The perimeter of an isosceles triangle is 33 cm and its base is 9 cm. How many centimetres is each of the equal sides?
Problem
Two angles of a triangle are 90° and 57°. What kind of triangle is it?
Problem
A quadrilateral is drawn on a grid. What is the most precise name for this quadrilateral?
Problem
A circle has radius 4 cm. How many centimetres is its diameter?
Problem
A shape and the lines a, b and c are drawn on a grid. Which of these lines is a line of symmetry of the shape?
Problem
The perimeter of a rhombus is 20 cm. How many centimetres is its side?
Choose the most precise name for this quadrilateral.
A quadrilateral has four right angles, but neighbouring sides of different lengths.
Problem
Two sides of a triangle are 10 cm and 11 cm long. The third side is a whole number of centimetres. How many different lengths can the third side have?
Problem
A circle touching all four sides is drawn inside a square of side 6 cm. How many centimetres is its radius?
Problem
One angle of an isosceles triangle is 84°. What can the angle between the two equal sides of this triangle be?
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