AP Board 7th Class Maths Solutions Chapter 5 Triangles Exercise 5.1

SCERT AP 7th Class Maths Solutions Pdf Chapter 5 Triangles Ex 5.1 Textbook Exercise Questions and Answers.

AP State Syllabus 7th Class Maths Solutions 5th Lesson Triangles Exercise 5.1

Question 1.
Classify the following triangles based on the length of their sides.
AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 1
Answer:
In ∆ABC,
AB ≠ BC ≠ AC
So, ∆ABC is scalene traingle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 2
Answer:
In ∆DEF,
DE = EF = FD = 2 cm
So, ∆DEF is an equilateral triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 3
Answer:
In ∆XYZ,
XZ = YZ = 3.5 cm
So, ∆XYZ is an isosceles triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 4
Answer:
Isosceles triangle (∵ Two sides are equal)

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 5
Answer:
Equilateral triangle (∵ Three sides are equal)

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 6
Answer:
Scalene triangle (∵ NO two sides are equal).

AP Board 7th Class Maths Solutions Chapter 5 Triangles Exercise 5.1

Question 2.
Classify the following triangles based on the measure of angles.
AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 7
Answer:
In ∆TUV, ∠T = 90°
So, ∆TUV is Right-angled triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 8
Answer:
In ∆QRS, ∠Q = 108°
So, ∆QRS is an Obtuse angled triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 9
Answer:
In ∆IJK, all are acute angles.
So, ∆IJK is an acute angled triangle.

Question 3.
Classify the following triangles based on their sides and also on their angles.
AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 10
Answer:
In ∆IJK, IJ ≠ KJ ≠ IK
So, ∆IJK is a scalene triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 11
Answer:
In ∆LMN, ∠M = 90
So, ∆LMN is a right triangle.

AP Board 7th Class Maths Solutions Chapter 5 Triangles Exercise 5.1

AP Board 7th Class Maths Solutions Chapter 5 Triangles Ex 5.1 12
Answer:
In ∆TUV, TU = UV = TV = 4.5 cm
So, ∆TUV is an equilateral triangle.