Show:
Classifying Triangles
Angle Relationships in Triangles
Triangle Congruence, Isosceles & Equilateral Triangles
Coordinate Proofs & Transformations
Triangle Congruence Postulates
100
A triangle that has all angles less than 90 degrees.
What is an acute triangle?
100
The two angles that are congruent in an isosceles triangle.
What are base angles?
100
Triangle RST is congruent to Triangle LMN. This side is congruent to segment TS.
What is segment NM?
100
A transformation that changes the size of a figure with a scale factor > 0.
What is a dilation?
100
p. 255 #14
What is SAS?
200
A triangle whose sides are all congruent.
What is an equilateral triangle?
200
The two interior angles in a triangle that are not adjacent to a given exterior angle.
What are remote interior angles?
200
Triangle RST is congruent to Triangle LMN. This angle is congruent to angle STR.
What is angle MNL?
200
p. 220 #13 What type of transformation is this?
What is a translation?
200
p. 254 #12
YZ=TU YZ=5t-1=5(5)-1=24 ST=XY ST=4t=4(5)=20 SU=XZ SU=t^2 -3=(5)^2 -3=22
300
A triangle that has one angle greater than 90 degrees.
What is an obtuse triangle?
300
p. 237 #34
What is 37.5 degrees?
300
p. 242 #9
What is 9?
300
p. 220 #14 What type of transformation is this?
What is a reflection?
300
p. 265 #13
a.) angle A=angle D b.) Given c.) angle C=angle F d.) AAS
400
A triangle that has two sides that are congruent.
What is an isosceles triangle?
400
p. 236 #20
What is 61 degrees?
400
p. 288 #9
What is 20?
400
p. 220 #15 What type of transformation is this?
What is a dilation?
400
p. 266 #22
a.) Given b.) Alt. Int. Angle Thm. c.) angle AED=angle CEB d.) segment AD=segment CB e.) triangle AED=triangle CEB f.) AAS
500
A triangle that has no congruent sides.
What is a scalene triangle?
500
p. 235 #10
What is 41 degrees?
500
p. 288 #6
What is 90 degrees?
500
p. 283 #22
A=lw=(3)(2)=6 For triangle RST: A=0.5(3)(1)=1.5 Since 0.25(6)=1.5, the area of triangle RST is 0.25 the area of the rectangle.
500
p. 270 #3
a.) Def. of Perp. Lines b.) Right Angle Thm c.) Reflexive Prop. of = d.) Def. of midpoint e.) triangle RXS=triangle RXT f.) CPCTC