In the given figure, name : all the triangles.

A triangle is a polygon with three edges, three angles and three vertices. It is one of the basic shapes in geometry. In the given figure, △ A B C is the main or the biggest triangle. D A and D E divide the main triangle and produce a total of 4 triangles - ∆ A B D , ∆ A D E , ∆ A D C , ∆ E D C . Thus, there are total 5 triangles: ∆ A B C , ∆ A B D , ∆ A D E , ∆ A D C , ∆ E D C .

In the given figure, name : the side opposite to ∠ C .

Consider the triangle ABC We know that, In geometry, a side is a line segment joining the two vertices. Hence, in the above triangle, the side opposite to ∠ C is A B .

In the given figure, name : all the line segments.

A line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints. According to the image in the question, there are total 8 line segments: These are A B , A D , A C , C D , C B , C E , E D , and B D .

In the given figure, name : the angle opposite to BC .

Consider the triangle ABC We know that, In geometry, a side is a line segment joining the two vertices. Hence, in the above triangle, the angle opposite to side B C is ∠ A .

From the figure at right, name : the line p in two other ways.

Given figure: From the figure, we observe that, the lines p meets with two lines they are s and r , in s and r crossing with line p there are two points that is B A o r A B . Hence, the two other way is B A o r A B .

From the figure at right, name : all the line segments on line q.

Given figure: A line segment is a part of a line that connects two points which are considered to be its endpoints. From the figure, we observe that, the lines segment of line q are A C , C E and A E . Hence, the lines segments are A C , C E and A E .

From the figure at right, name : the line t in two other ways.

Given figure: From the figure, we observe that, the lines t meets with two lines they are s and q , in s and q crossing with line t there are two points that is E D o r D E . Hence, the two other way is E D o r D E

E M B I B E

Foundation Course Mathematics>Chapter 4 - Basic Geometrical Ideas>Exercise

Exercise

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