25.3k views
0 votes
Please help
maths geometry

Please help maths geometry-example-1

1 Answer

1 vote

Explanation:

since both shapes are totally symmetric, a few answers are obvious :

(1) F2 = F1 = 50°

(3) B1 = D1 = 20°

last but not least, D2 = B2.

using the fact that the sum of all angles in a triangle is always 180°.

and that the sum of all angles sind a single point on one side of a line is also always 180° :

in the triangle CDF the inner angle C is

C = 180 - 20 - 50 = 110°.

therefore, C1 = 180 - 110 = 70°

E1 = 90° (a major rule for the diagonals of a kite).

D2 = 180 - 90 - 70 = 20°

and so, B2 = 20°

(2) D2 = 20°

(4) B2 = D2 = 20°

User Boob
by
7.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories