Similarity and Altitudes

State the postulate that proves these triangles are similar.

• SSS

• AA

• SAS

• Not similar

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

• AA

• SAS

• SSS

• Not Similar

Solve for X.

• 2 ft

• 3 ft

• 4 ft

• 6 ft

What type of special segments are being used?

• Perpendicular Bisectors

• Angle Bisectors

• Medians

• Altitudes

• 1
• 2
• 3
• 4

Identify AD as a median, altitude, neither, or both according to what can be proved.

• Median

• Altitude

• Neither

• Both

Identify AD as a median, altitude, neither, or both according to what can be proved.

• Median

• Altitude

• Neither

• Both

Given SA is the altitude, which of the following statements is false?

• ∠SAR = 90

• ∠RAS ≅ ∠SAT

• ∠SAT = 90

• ∠TSR = 90

Which of the following describes an altitude of a triangle?

• A segment that passes through the middle of the triangle.

• A segment with endpoints at the vertex and midpoint of the opposite side.

• A segment that connects two midpoints of two sides.

• A segment that connects the vertex and the opposite side at 90 degrees. 

Identify AD as a median, altitude, neither, or both according to what can be proved.

• Median

• Altitude

• Neither

• Both