MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 21

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The sum of all angles in a triangle is

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Important Questions on Constructions

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 22

The sum of all angles of a quadrilateral is

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 23

In the given figure $A B ∥ C D, ∠ O A B = 150 °, ∠ O C D = 120 °$ . Then $∠ A O C =$ ?

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 24

In the given figure, $P Q ∥ R S, ∠ P A B = 60 °$ and $∠ A C S = 100 °$ . Then $∠ B A C =$ ?

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 25

In the given figure, $A B ∥ C D ∥ E F, ∠ A B G = 110 °, ∠ G C D = 100 °$ and $∠ B G C = x °$ . Then $x =$ ?

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 26

The sum of any two sides of a triangle is always

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 27

The diagonals of a rhombus

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 28

In

∆ A B C, ∠ B = 90 °, A B = 5 cm

and

A C = 13 cm

. Then

B C =

?

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MATHEMATICS FOR CLASS 7>Chapter 17 - Constructions>EXERCISE 17C>Q 29

In a

∆ A B C

, it is given that

∠ B = 37 °

and

∠ C = 29 °

. Then,

∠ A = ?