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प्रश्न
Euclid stated that all right angles are equal to each other in the form of ______.
विकल्प
an axiom
a definition
a postulate
a proof
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उत्तर
Euclid stated that all right angles are equal to each other in the form of a postulate.
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संबंधित प्रश्न
Give a definition of the following term. Are there other terms that need to be defined first? What are they, and how might you define them?
line segment
In how many points two distinct lines can intersect?
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In Ancient India, Altars with combination of shapes like rectangles, triangles and trapeziums were used for ______.
Pythagoras was a student of ______.
Which of the following needs a proof?
The boundaries of the solids are curves.
Solve the following question using appropriate Euclid’s axiom:
In the following figure, if OX = `1/2` XY, PX = `1/2` XZ and OX = PX, show that XY = XZ.

Read the following two statements which are taken as axioms:
- If two lines intersect each other, then the vertically opposite angles are not equal.
- If a ray stands on a line, then the sum of two adjacent angles so formed is equal to 180°.
Is this system of axioms consistent? Justify your answer.
