Question

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Answer 1

Answer:

a. idk

b. it's a property of a triangle to find an angle or degree of the triangle by 180 degrees

c. equilateral triangle is a triangle in which all sides are equal

b. -30

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Answer 2

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Sol - 1

a) Median is a height of triangle which divides any of its side into two equal parts

b) Sum of All angles in a triangle is 180°

c) The triangle which has all of its sides equal is known as equilateral triangle.

Sol - 2

a) Let the number be = x

Three times a number = 3x

Sum of 3times a number and 11 is 32

3x + 11 = 32

3x = 21

x = 7

So, the number is 7

b)

(-5) = 5( p-1 )

(-5) = 5p - 5

5p = -5 + 5

5p = 0

p = 0

Sol - 3

In ∆ABC

A + B + C = 180° ( Angle Sum property )

x + 50° + 60° = 180°

x = 70°

In ∆PQR

P + Q + R = 180°. ( Angle sum property )

90° + 30° + x = 180°

x = 60°