Abcd is a cyclic quadrilateral whose diagonals intersect ata point E.If <dbc=70 and <bac=30. Find <bcd further ab=bc, find <ecd
Draw one side of the square and label it A.Suppose the other three sides of the square are B, C and D.You can draw these in orders:BCD, BDC, CBD, CDB, DBC and DCB. Six ways in all.Alternative answer:Use a pencil, a chalk, a crayon, a pen, a paint brush, and your finger in the sand.
The important property of a rhombus to note is that a rhombus has all sides of equal length. Then: Let the vertices be A, B, C, D; let the diagonal BD be the same length as the sides. Consider the triangle ABD formed by two sides of the rhombus and the diagonal BD. As all sides are equal in length, it must be an equilateral triangle and thus each angle can be calculated, in particular angle BAD of the rhombus. Consider the triangle BCD formed by the other two sides of the rhombus and the diagonal BD. The angle BCD of the rhombus can also be calculated as above. For angles ABC and CDA of the rhombus, note that angle ABC is the same as the sum of angles ABD and DBC. and those angles can be calculated above; similarly for angle CDA. A short cut that can be used is the property of a rhombus that opposite angles of a rhombus are equal which means once angle DAB has been calculate, BCD is then known. Then by subtracting the sum of these from 360o (the sum of the angles of a quadrilateral and a rhombus is an quadrilateral) and dividing the result by 2 will give the other two angles..
minus 170 dBc
DBC Pierre was born in 1961.
Danish Bacon Company
TRUE
Triangles BDC, CBD, CDB, DBC and DCB.
The measurement of angle ABD is 73 degrees. You find this angle by subtracting angle DBC from angle ABC, or 89-16 is equal to 73 degrees.
7
Its the security number, for amex it is composed of 4 digits..
good luck. Since Casio stopped producing the DBC series of watches, you'll have to find it on a third party site like eBay or Amazon. And not surprisingly, prices are double or even triple what they once were. I paid 69 US dollars the last time I bought a DBC (300), now the 150 is going used for 180 bucks or more.
No cheating!
bc dbc as b bn c naa ab as ab bn b ba a bn bn b b
We definitely need to see the drawing that goes along with that question before we can even begin to try and answer it.