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Find the measure of the numbered angles

Find the measure of the numbered angles-example-1
User Alexandros
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2 Answers

10 votes
all are 20 degrees
180-140=40
40/2 = 20 angle 1 and 3
if both triangles are similar than 1 2 3 4 are 20 degrees.
User Philipp Merkle
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10 votes

Hello!

This is a parallelogram. It is a quadrilateral with two pairs of parallel sides. Here, the opposite angles are alternate, that is, they have togheter 180°.

Rhombus

This is a rhombus. It is a quadrilateral whose four sides all have the same length. Here, the diagonals of a rhombus intersect at equal angles.

A rhombus has opposite angles equal and the figure formed by joining the midpoints of the sides of a rhombus is a rectangle, and vice versa. It has an inscribed circle.

Good luck:)

Find the measure of the numbered angles-example-1
User Chris Dolphin
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2.9k points