Question

∠BOD and ∠COA are ________ angles. supplementary vertical complementary similar

Answer 1

Answer:

vertical angles

Step-by-step explanation:

∠BOD and ∠COA are both opposite the vertex at O and are vertical angles.

Answer 2

Answer:

Vertical angles

Step-by-step explanation:

Supplementary angles : A pair of angles whose sum is 180°,

Vertical angles : A pairs of opposite angles which are made by two intersecting lines.

Complementary angles : A pair of angles whose sum is 90°,

In the given diagram,

The measurements of ∠BOD and ∠COA are not given,

Thus, we can not say that they are supplementary or complementary,

But, ∠BOD and ∠COA are opposite angles formed in the intersection of lines AD and BD.

Hence, they are vertical angles.

Note : two figures are called similar if they have same shape however have different size. While, angles are not a figure.

Thus, they can not be similar. They can be equal or unequal.