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Set up an Equation in the Following Case: in an Isosceles Triangle, the Vertex Angle is Twice Either Base Angle. (Let the Base Angle Be B In Degrees. Remember that the Sum of Angles of a - CBSE Class 7 - Mathematics

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Question

Set up an equation in the following case:

In an isosceles triangle, the vertex angle is twice either base angle. (Let the base angle be b in degrees. Remember that the sum of angles of a triangle is 180 degrees.)

Solution

An isosceles triangle has two of its angles of equal measure.

Let base angle be b.

Vertex angle = 2 × Base angle = 2b

Sum of all interior angles of a Δ = 180°

b + b + 2b = 180°

4b = 180°

  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Mathematics for Class 7 (2018 to Current)
Chapter 4: Simple Equations
Ex. 4.10 | Q: 6.4 | Page no. 82
Solution Set up an Equation in the Following Case: in an Isosceles Triangle, the Vertex Angle is Twice Either Base Angle. (Let the Base Angle Be B In Degrees. Remember that the Sum of Angles of a Concept: Concep of Equation.
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