The sides of a right angled triangle are in the ratio 5 : 12 : 13 and its perimeter is 120 units then, the sides are ______________
25, 36, 59
10, 24, 26
36, 39, 45
20, 48, 52
20, 48, 52
Explanation;
Hint:
The sides of a right angled triangle are in the ratio 5 : 12 : 13
Take the three sides as 5a, 12a, 13a
Its perimeter is 5a + 12a + 13a = 30a
It is given that 30a = 120 units
a = 4 units
∴ the sides 5a = 5 × 4 = 20 units
12a = 12 × 4 = 48 units
13a = 13 × 4 = 52 units
In ΔPQR, D is the mid-point of `bar(QR)`.
`bar(PM)` is ______.
PD is ______.
Is QM = MR?
Draw rough sketch for the following:
In ΔPQR, PQ and PR are altitudes of the triangle.
Draw rough sketch for the following:
In ΔXYZ, YL is an altitude in the exterior of the triangle.
Draw an acute angled Δ PQR. Draw all of its altitudes. Name the point of concurrence as ‘O’.
Point G is the centroid of ABC.
If l(RG) = 2.5 then l(GC) = ______.
Name the orthocentre of ∆PQR
The triangle ABC formed by AB = 5 cm, BC = 8 cm, AC = 4 cm is ______.
How many altitudes does a triangle have?
Which of the following figures will have it’s altitude outside the triangle?
The ______ triangle always has altitude outside itself.
