Question

Being a polyam, a triangle has an
and an intern In de fine 42
is in the interior of the triangle, Risin
de exterior and on the triangle
EXERCISE 4.4
Draw a rough sketch of a triangle ABC Mark a pu Pisis interior and a ponto
its exterior. Is the point Assentorinis interior
Identify three trianges in the figure
(b) Write the names of seven des
(c) Write the names of lines
(d) Which two triangles have ZB a common?
4.12 Quadrilaterals
A four sided polygon is a quadrilateral. It has
#sides and 4 angles. As in the case of a
triangle, you can visualise its interior too.
Note the cyclic manner in which the
vertices are named.
This quadrilateral ABCD (Fig 4.23) has​

Answer 1

Answer:

Currently Father = 60 and Son = 20

Explanation

Currently

Let son's age = x then Father's age = 3x

After ten Years

Son's age = x+10

Father's age =3x+10

also given

3x+10= 2{(x+10)+10}

3x = 2x + 20 + 103x=2x+20+10

x = 20 + 10 - 10x=20+10−10

x = 20x=20

therefore current

son = 20 and

father =60