maheshpdxb47
maheshpdxb47 maheshpdxb47
  • 04-01-2020
  • Mathematics
contestada


5ABCD is a quadrilateral. AO and BO are the angle bisectors of A
and B which meet at O. If C = 70°, D=50°, find aob​

Respuesta :

kenlingdad kenlingdad
  • 04-01-2020

Answer:

60°

Step-by-step explanation:

sum of interior angles of quadrilateral is 360°

∠C = 70°

∠D = 50°

∠C + ∠D = 120°

∴ ∠A + ∠B = 360° - 120° =240°

AO and BO bisect ∠A and ∠B

∠OAB + ∠OBA = 1/2 x ( ∠A + ∠B) = 120°

∠AOB = 180° - (∠OAB + ∠OBA) = 180° - 120° = 60°

Ver imagen kenlingdad
Answer Link

Otras preguntas

A farmer raises only cows and Sheep. He wants to raise no more than 16 animals, including no more than 12 sheep. He spends birr 5 to raise a cow and Br 2 to rai
Which of the following is not true about capitalism? Group of answer choices all costs and benefits are internal focused on wealth and job creation growth is e
MATH: Composition of two functions...help needed with this problem
Bob wants to give Alice a necklace of n beads he originally has a long chain with caring beauty. Of each bead
What is the volume of a 0.40 M Nal solution that contains 0.20 moles Nal in it?
find the value of x. round to the nearest tenth
Ratio 6 to 5 of 20000
9x+9y=9. Solve for Y
I'm having trouble with inequalities, any help will be appreciated, thanks.
what is meant by afterglow?​