Question

4
A quadrilateral has 3 equal angles each
equal to 70°, find the fourth angle.
In an isosceles trapezium ABCD, if AB || CD,
show that ZADC + ZABC = 180°.
5​

Answer 1

Answer:

Given picture is answer of second question and first question's answer is given below.

Step-by-step explanation:

(1) In a quadrilateral sum of all 4 angles = 360°

Here given that 3 angles are same = 70°

So, fourth angle = 360°-3×70°

=360°-210°=150°.

(2) see the answer in picture above of this question