Basic geometrical ideas Ex-4.4

NCERT solutions for Maths Basic geometrical ideas 

NCERT Solutions for Class 6 Maths Basic geometrical ideas

Class –VI

Mat hematics

(Ex. 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: Sol.

A is neither interior of the figure nor exterior of triangle. It is a vertex.

NCERT Solutions for Class 6 Maths Exercise 4.4

Question 2.(a) Identify three triangles in the figure:

(b) Write the names of seven angles.

(c) Write the names of sic line segments.

(d) Which two triangles have $\angle$B as common?

Answer:

(a) The three triangles are: $\Delta {\text{ABC}},$$\Delta {\text{ABD,}}$$\Delta {\text{ADC}}$

(b) Angles are: $\angle$ADB, $\angle$ADC, $\angle$ABD, $\angle$ACD, $\angle$BAD, $\angle$CAD, $\angle$BAC

(c) Line segments are: $\overline {{\text{AB}}} ,$$\overline {{\text{AC}}} ,$$\overline {{\text{AD}}} ,$$\overline {{\text{BD}}} ,$$\overline {{\text{DC}}} ,$$\overline {{\text{BC}}}$

(d) Triangles having common $\angle$B: $\Delta {\text{ABC}},$$\Delta {\text{ABD,}}$