Euclid stated that all right angles are equal to each other in the form of
a. an axiom
b. a definition
c. a postulate
d. a proof

Solution:

We know that

All right angles are equal to one another is Euclid’s fourth postulate.

Therefore, the statement is in the form of a postulate.

✦ Try This: Keerthana and Ravi have the same weight. If they each gain weight by 16 kg, how will their new weights be compared ?

Given, Keerthana and Ravi have the same weight.

We have to compare their new weights when each of them gains 16kg.

Let the weight of Keerthana be x kg

So, weight of Ravi = x kg

When each gain weight by 16 kg,

Weight of Keerthana = (x + 16) kg

Weight of Ravi = (x + 16) kg

Using Euclid’s second axiom,

If equals are added to the equals, the wholes are equal.

From the Euclid’s axiom,

(x + 16) = (x + 16)

Therefore, the weight of Keerthana is equal to the weight of Ravi.

☛ Also Check: NCERT Solutions for Class 9 Maths Chapter 5

NCERT Exemplar Class 9 Maths Exercise 5.1 Problem 21

Euclid stated that all right angles are equal to each other in the form of a. an axiom, b. a definition, c. a postulate, d. a proof

Summary:

Euclid stated that all right angles are equal to each other in the form of a postulate

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