Question

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Answer 1

Step-by-step explanation:

21) TOPIC:-

Euler's Formula

It deals with Vertices , Faces , Edges.

• Vertices - Edges + Faces

REQUIRED ANSWER:-

Cube has ,

Vertices = 8

Faces = 6

Edges = 12

V - E + F = 2

$8 - 12 + 6 = 2$

$8 - 6 = 2$

$2 = 2$

LHS = RHS

HENCE EULER'S FORMULA FOR CUBE IS VERIFIED!!

____________________________

23) TOPIC:-

Quadrilaterals

As it is a quadrilateral, sum of all angles add upto to 360° .

REQUIRED ANSWER:-

$50 + 130 + 140 + x = 360$

$x = 360 - 320$

x = 40°

HENCE THE ANGLE X MEASURE = 40°

Answer 2

answer

Step-by-step explanation:

X = 40° thinking so answer is helpful to you rock your day guys