Question

15. AABC is an equilateral triangle inscribed in a circle with centre O. What is the measure of the
angle subtended by cach side of the triangle at the centre O?
16. At which point does the graph of y = 3x - 1 intersect X-axis?
PART-D
All questions are compulsory. In case of internal choices, attempt any one.
Questions (17-22) carry 2 marks:
17. The angles of quadrilateral are in the ratio 5: 7:10:14. Find all the angles of the
quadrilateral
18. Factorize using suitable identity: 9x +36 y +81 2+36xy-108yz - 54zx
OR
Factorize using suitable identity 343 m-64m
19. The equal sides of isosceles triangle are 12 cm and its perimeter is 30 cm.
Find the area of the triangle.
E​

Answer 1

Step-by-step explanation:

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