Question

Write 3 names using straight lines and count the angles.

Name	Number of right angles	Number of angles more than a right angle	Number of angles less than a right angle
$ $	$ $	$ $	$ $
$ $	$ $	$ $	$ $
$ $	$ $	$ $	$ $

Answer 1

Hint: To answer this question, we need to draw the different types of triangles with different lengths and different angles. And then find out the name of the triangle formed, Number of right angles, Number of angles more than a right angle and Number of angles less than a right angle.

Complete step-by-step solution:
 Let us draw the triangles with 3 straight lines.
1.

Name of the triangle: Right angled triangle.
Number of right angles: 1
Number of angles more than a right angle: 0
Number of angles less than a right angle: 2

2.
Name of the triangle: Equilateral triangle.
Number of right angles: 0
Number of angles more than a right angle: 0
Number of angles less than a right angle: 3

3.

Name of the triangle: Scalene triangle.
Number of right angles: 0
Number of angles more than a right angle: 1
Number of angles less than a right angle: 2
Triangle is defined as the closed 2D figure having three sides, three angles and three vertices. A triangle can be formed by joining any three dots such that line segments connect each other end by end.
Let us fill the table:

Name	Number of right angles	Number of angles more than a right angle	Number of angles less than a right angle
Right angled triangle	1	0	2
Equilateral Triangle	0	0	3
Scalene triangle	0	1	2

Note: Types of triangles:
Triangles can be classified on the basis of their size as well as angles.
Classification of triangles on the basis of their sides is as follows
1.Equilateral Triangle, 2. Isosceles triangle and 3. Scalene Triangle.
Classification of triangles on the basis of their angles is as follows
1.Acute Angled Triangle, 2. Right Angled Triangle and 3. Obtuse Angled Triangle.