1.23 Classwork

Figure #1

1) Use the [b][color=#ff00ff]pink [/color][/b]highlighter to mark segments AE and LE above as the [u]legs [/u]of the isosceles triangle. [br]2) Use the [b][color=#0000ff]blue [/color][/b]highlighter to mark the [u]base [/u]of the isosceles triangle that contains these legs.[br]3) Use the [b][color=#ff0000]red [/color][/b]pen to mark pair of congruent [u]base angles[/u] of the isosceles triangle.

Figure #2

1) Use the [b][color=#ff00ff]pink [/color][/b]highlighter to mark segments LE and LG above as the [u]legs [/u]of the isosceles triangle. [br]2) Use the [b][color=#0000ff]blue [/color][/b]highlighter to mark the [u]base [/u]of the isosceles triangle that contains these legs.[br]3) Use the [b][color=#ff0000]red [/color][/b]pen to mark pair of congruent [u]base angles[/u] of the isosceles triangle.

Figure #3

Question #3

1) Use the [b][color=#ff00ff]pink [/color][/b]highlighter to mark the [u]legs [/u]of the isosceles triangle. [br]2) Use the [b][color=#0000ff]blue [/color][/b]highlighter to mark the [u]base [/u]of the isosceles triangle.[br]3) Use the [b][color=#ff0000]red [/color][/b]pen to mark pair of congruent [u]base angles[/u] of the isosceles triangle.[br][br]Then, determine the value of y.

180° 44° 48° 92°

Figure #4

Question #4

1) Use the [b][color=#ff00ff]pink [/color][/b]highlighter to mark the [u]legs [/u]of the isosceles triangle. [br]2) Use the [b][color=#0000ff]blue [/color][/b]highlighter to mark the [u]base [/u]of the isosceles triangle.[br][br]Then, determine the value of z.

2.5 5 20 10

Figure #5

Question #5

1) Use the [b][color=#ff00ff]pink [/color][/b]highlighter to mark the [u]legs [/u]of the isosceles triangle. [br]2) Use the [b][color=#0000ff]blue [/color][/b]highlighter to mark the [u]base [/u]of the isosceles triangle.[br]3) Use the [b][color=#ff0000]red [/color][/b]pen to mark pair of congruent [u]base angles[/u] of the isosceles triangle.[br][br]Then, determine the value of a.

51 86 92 47

Question #6

What are the properties of an isosceles triangle?