Question

Two angels of a quadrilateral are 70degree and 130degree and the other two angels are equal find the measure of these two angels

Answer 1

Total of angle of quadrilateral =360°
Measurement of first angle =70°
measurement of second angle = 130°
70+130=200
360-200=160
How many angles are there =4-2=2
because two angles are given
160÷2=80
each measures 80°

Answer 2

Answer:

The two equal angels of the quadrilateral are = 80°

Step-by-step explanation:

Down below is how I got the answer...

70° + 130° +2x = 360°

200° + 2x = 360°

2x = 360° - 200°

2x = 160°

x = $\frac{160}{2}$

x = 80°

∴ The two equal angels of the quadrilateral are = 80°