Question

Q 18. Find the area.
[06]
Bom-
2)
-60cm
30cm
10cm
A=2
30cm
A=?
-- 12cm-
--60cm-
Fig. Rectangle
Fig. Trapezium
3)
10cm
A = ?
---20cm
Fig. Triangle​

Answer 1

ANSWER:

Given: Three angles of a quadrilateral are 75°, 90° and 75°.

Let the fourth angle be x.

Using angle sum property of quadrilateral,

75°+90°+75°+x=360°⇒240°+x=360°

⇒x=360°-240°⇒x=120°

So, the measure of the fourth angle is 120°.