## Exam-Style Questions.## Problems adapted from questions set for previous Mathematics exams. |

## 1. | GCSE Higher |

A triangle, ABC, is drawn (not to scale) with AC = 12.6 cm.

A line segment, DE, is drawn with length 6.2cm on the triangle parallel to AB with DC = 4.2 cm.

(a) Calculate the length of AB.

(b) Calculate the length of BE if BC = 10.5 cm.

## 2. | GCSE Higher |

(a) Victor estimates the height of a flag pole by holding a ruler vertically so the height of the flag pole is exactly covered by the ruler when he is standing 240 centimetres from the flag pole.

The ruler is 30 cm long.

The horizontal distance of his eyes from the ruler is 40cm.

Calculate an estimate of the height of the flag pole.

(b) Give two reasons why this method may not be suitable to estimate the height of a very tall building.

## 3. | GCSE Higher |

Prove that triangle ABC is congruent to triangle CDA if ABCD is a parallelogram.

## 4. | GCSE Higher |

ABCD is a parallelogram with diagonals meeting at E. Prove that triangle ABE is congruent to triangle CDE.

## 5. | GCSE Higher |

The circumference of the red circle is 80% of the circumference of the blue circle.

(a) Find the ratio of the area of the red circle to the area of the blue circle.

The green square has sides of length \(a\) cm.

The yellow square has sides of length \(b\) cm.

The area of the green square is 21% greater than the area of the yellow square.

(b) Work out the ratio \(a : b\)

## 6. | GCSE Higher |

(a) Find the area of a regular octagon if the distance from its centre to any vertex is 10cm.

(b) If the octagon had been cut from a piece of square card that was only just large enough, work out the area of the original square piece of card.

(c) A table top is made in the shape of a regular octagon with sides five times as long as the card model. Find the ratio of the area of the table top to the area of the card model.

## 7. | GCSE Higher |

The three boxes pictured below are mathematically similar.

The edges of the largest box are twice as long as the edges of the smallest box.

The volume of the middle box is twice as big as the volume of the smallest box.

What fraction is the volume of the middle box of the volume of the largest box?

## 8. | GCSE Higher |

ABC is an isosceles triangle in which AB = AC.

AD = AE.

Prove that triangle ABD is congruent to triangle ACE.

## 9. | GCSE Higher |

Two similar pentagonal based pyramids have surface areas 200 cm^{2} and 50 cm^{2} respectively.

The volume of the larger pyramid is 800 cm^{3}.

Show that the volume of the smaller pyramid is 100 cm^{3}.

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