## Chapter 4 Basic Geometrical Ideas Exercise 4.4

Question 1: Draw a rough sketch of a triangle ABC. Mark a point P in its interior and a point Q in its exterior. Is the point A in its exterior or in its interior?

Answer:

Point A doesn’t lie in the interior or exterior of triangle ABC.

Question 2:

a) Identify three triangles in the figure.

b) Write the names of seven angles.

c) Write the names of six line segments.

d) Which two triangles have ∠B as common?

Answer:

a)

△ABC

△ABD

△ADC

b)

∠BAC

∠BAD

∠CAD

∠ADB

∠ADC

∠ABC

∠ACB

c)

line segment AB

line segment BC

line segment CA

line segment AD

line segment BD

line segment CD

d)

△ABD

△ABC

## No comments:

## Post a Comment