Isosceles trapezoid v3

In an isosceles trapezoid ABCD is the size of the angle β = 81°
Determine size of angles α, γ and δ.


α =  81 °
γ =  99 °
δ =  99 °


Solution in text γ =

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!

To solve this example are needed these knowledge from mathematics:

Next similar examples:

  1. Isosceles trapezium
    isoscele_trapezoid Trapezoid YSED (YS||ED) is isosceles. The size of the angle at vertex Y is 17 degrees. Calculate the size of the angle at vertex E.
  2. Rectangular trapezoid
    trapezoids How many inner right angles has a rectangular trapezoid?
  3. Trapezium 2
    trapezium_3 Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
  4. Area of ditch
    prikop How great content area will have a section of trapezoidal ditch with a width of 1.6 meters above and below 0.57 meters? The depth of the ditch is 2.08 meters.
  5. Degrees to radians
    angle Convert magnitude of the angle α = 9°39'15" to radians:
  6. TVs
    tv Production of television sets increased from 3,500 units to 4,200 units. Calculate the percentage of production increase.
  7. Equation
    rovnice_3 Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
  8. Conference
    conference 148 is the total number of employees. The conference was attended by 22 employees. How much is it in percent?
  9. The percentages in practice
    plodina If every tenth apple on the tree is rotten it can be expressed by percentages: 10% of the apples on the tree is rotten. Tell percent using the following information: a. in June rained 6 days b, increase worker pay 500 euros to 50 euros c, grabbed 21 fro
  10. Inequation
    inequalities Solve the inequation: 5k - (7k - 1)≤ 2/5 . (5-k)-2
  11. Class
    children_2 In a class are 32 pupils. Of these are 8 boys. What percentage of girls are in the class?
  12. Gloves
    rukavice I have a box with two hundred pieces of gloves in total, split into ten parcels of twenty pieces, and I sell three parcels. What percent of the total amount I sold?
  13. Percents - easy
    percents_5 How many percent is 432 out of 434?
  14. New refrigerator
    lednice New refrigerator sells for 1024 USD, Monday will be 25% discount. How much USD will save, and what will be the price?
  15. Apples 2
    jablko James has 13 apples. He has 30 percent more apples than Sam. How many apples has Sam?
  16. Base, percents, value
    percent_1 Base is 344084 which is 100 %. How many percent is 384177?
  17. Number
    percent What number is 20 % smaller than the number 198?