In - ABC- - A- B- 50 0- Name the pair of sides which are equal-

In ABC , ∠ A = ∠ B=50^o Hence, AC=BC #160; #160; #160; #160; #160; #160; #160; Converse of property of isosceles triangle hav ...

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Byju's Answer

Standard VII

Mathematics

Properties of Isosceles and Equilateral Triangles

In Δ ABC, ...

Question

In $Δ A B C$ , $∠ A = ∠ B = 50^{0}$ . Name the pair of sides which are equal.

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Solution

In $△ A B C$ ,
$∠ A = ∠ B = 50^{o}$
Hence, $A C = B C$ {Converse of property of isosceles triangle having equal sides}

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Q. In Fig. 16.19, ABCD is a quadrilateral.
(i) Name a pair of adjacent sides.
(ii) Name a pair of opposite sides.
(iii) How many pairs of adjacent sides are there?
(iv) How many pairs of opposite sides are there?
(v) Name a pair of adjacent angles.
(vi) Name a pair of opposite angles.
(vii) How many pairs of adjacent angles are there?
(viii) How many pairs of opposite angles are there?

In an isosceles $Δ$ ABC, $∠$ A is 30 $^{\circ}$ . The sides AB and AC are equal. Using constructions, find which side of $Δ$ ABC is the shortest.

In the figure, ABCD is a quadrilateral.
(i) Name a pair of adjacent sides.
(ii) Name a pair of opposite sides.
(iii) How many pairs of adjacent sides are there?
(iv) How many pairs of opposite sides are there?

(v)Name a pair of adjacent angles.
(vi) Name a pair of opposite angles.
(vii) How many pairs of adjacent angles are there?
(viii) How many pairs of opposite angles are there?

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In ΔABC, ∠A=∠B=500. Name the pair of sides which are equal.

In △ABC,∠A=∠B=50oHence, AC=BC {Converse of property of isosceles triangle having equal sides}

In $Δ A B C$ , $∠ A = ∠ B = 50^{0}$ . Name the pair of sides which are equal.

In $△ A B C$ ,
$∠ A = ∠ B = 50^{o}$
Hence, $A C = B C$ {Converse of property of isosceles triangle having equal sides}