Answer: ABCD is a quadrilateral
To prove : ∠AOB=
2
1
(∠C+∠D)
AO and BO is bisector of A and B
∠1=∠2∠3=∠4...(1)
∠A+∠B+∠C+∠D=360
(Angle sum property)
2
1
(∠A+∠B+∠C+∠D)=180...(2)
In △AOB
∠1+∠3+∠5=
2
1
(∠A+∠B+∠C+∠D)
∠1+∠3+∠5=∠1+∠3+
2
1
(∠C+∠D)
∠AOB=
2
1
(∠C+∠D)
Explanation: In a quadrilateral ABCD. AO and BO are bisectors of angle A and angle B respectively. Prove that ∠AOB=
2
1
{∠C+∠D}.
Answer:
The step which is not necessary is,
- Determine the shaded area for each line.
Step-by-step explanation:
The step which is not necessary when solving this system of equations by graphing is,
- Determine the shaded area for each line.
Answer:
8cm = 0.08m
Step-by-step explanation:
8×10^-2 Because we convert
from cm to m.
Answer:
2y+1+9x is written as a product of three factors
Answer:
320
Step-by-step explanation:
