**Basic Geometrical Ideas**

# Exercise 4.3

1). Name the angles in the given figure.

Angles in the given figure are ∟DAB, ∟ABC, ∟BCD, and ∟CDA

2). In the given diagram, name the point(s).

(a). In the interior of ∟DOE

Point A

(b). In the exterior of ∟EOF

Point A, C, D.

(c). On ∟EOF

Points B, E, O, D.

3). Draw rough diagrams of two angles such that they have

(a). One point in common.

(b). Two points in common.

(c). Three points in common.

Such a diagram is not possible.

(d). Four points in common.

Such a diagram is not possible.

(e). One ray in common.

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