Grade 12 Maths · Euclidean Geometry

Compare areas of two triangles

Compare the areas of two triangles with the same height by comparing their bases, for example bases 3 and 6 give areas in ratio 1 : 2.

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Grade 12 Proportionality: Area of triangle #1Kevinmathscience

Grade 12 Proportionality: Area of triangles # 2Kevinmathscience

ratios of area of triangles part 1| proportionality gr12| Euclidean Geometry grade12 |mathsslmaths sl

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Question b · Siyavula Grade 12 Mathematics, 8.4 Triangles, Worked example 2 · 3 marks

Given parallelogram

PQRS

with

QR

produced to

T

RS = 45 cm

QR = 30 cm

and

h = 10 cm

. $Diagram for this question$

b If

TR : TQ = 1 : 4

, show that

\frac{Area △ STR}{Area △ PRQ} = \frac{1}{3}

.(3)

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