Properties of the Deltoid: Finding angle size in a kite

Given the following deltoid:

Find the size of the angle $∢B$

120

Given the following deltoid:

Find the size of the angle $∢C$

22

Given the following deltoid:

Find the size of the angle $∢\text{ADC}$

90

Given the following deltoid:

Find the size of the angle $∢\text{OBC}$

25

Look at the deltoid below.

Calculate the size of angle A.

50

Given the following deltoid:

Find the size of the angle $∢ACB$

40

Given the following deltoid:

Find the size of the angle $∢BCD$

60

Given the following deltoid:

Find the size of the angle $∢\text{BAC}$

55