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14. Quadrilaterals
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Q2 of 95 Page 15

In a parallelogram ABCD, if ∠D=115°, then write the measure of ∠A.

Given,


In parallelogram ABCD


∠D = 115° Given


∵∠A & ∠D are adjacent angles of parallelogram


∴∠A +∠D = 180°


∠A = 180°-115° = 65°


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20

Fill in the blanks to make the following statements correct:

(i) The triangle formed by joining the mid-points of the sides of an isosceles triangle is…..


(ii) The triangle formed by joining the mid-points of the sides of a right triangle is…..


(iii) The figure formed by joining the mid-points of consecutive sides of a quadrilateral is……

1

In a parallelogram ABCD, write the sum of angles A and B.

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PQRS is a square such that PR and SQ intersect at O. State the measure of ∠POQ.

4

In a quadrilateral ABCD, bisectors of angles A and B intersect at O such that ∠AOB=75°, then write the value of ∠C+∠D.

Questions · 95
14. Quadrilaterals
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