◈ Oracle Prep Sign Up Free

O-LevelMathematicsGeometry4024/11 · Oct/Nov 2021 · Q103 Marks

A triangle has one angle of 55°. The other two angles in the triangle are in the ratio 3 : 2 . Calculate the size of the smallest angle in the triangle.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2021). The mark or mark type is shown in brackets.

10 50 [3] M2 for (180-55)/(3+2) x k oe where k = 1, 2 or 3 or M1 for 180-55 oe or n/(3+2) Alternative method: M2 for 3/2 y + y = 125 oe or x + 2/3 x = 125 oe or M1 for x + y = 125 oe or x/y = 3/2 oe

Write your answer and get it marked

On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.

Sign up free →

About this question

Topic: Geometry, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source: O-Level Mathematics, Oct/Nov 2021 Paper 1 Variant 1, question 10.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Mathematics questions

GeometryMay/June 20151m

In triangle ABC, AB = 5 cm and AC = 6 cm. Measure angle BAC in your triangle.

GeometryMay/June 20172m

Complete the sentences below which describe two different types of quadrilateral.

GeometryMay/June 20184m

An irregular polygon has 22 sides.

ProbabilityMay/June 20184m

Basia records the colour of 100 cars passing the school gate. Her results are recorded in the table. | Colour of car …

Algebra and graphsMay/June 20183m

f(x) = 3 - 2x g(x) = 4x³ - 1

Algebra and graphsMay/June 20183m

Evaluate 3³ - 3⁰.

← Browse all past-paper questions