# Warm up - PowerPoint PPT Presentation

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Warm up. 4.3 Analyzing Triangle Congruence. Two new shortcuts: AAS HL. 60 °. 70 °. Angle Angle Side.

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Warm up

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Warm up

## 4.3 Analyzing Triangle Congruence

Two new shortcuts:

AAS

HL

60°

70°

### Angle Angle Side

Triangle congruence can be proved if two angles and a NON-included side of one triangle are congruent to the corresponding angles and NON-included side of another triangle, then the triangles are congruent.

60°

70°

5 m

5 m

These two triangles are congruent by AAS

### Hypotenuse Leg

This SPECIAL shortcut is ONLY for right triangles.

If the hypotenuse and a leg of a right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.

4.5 cm

If this wasn’t a right triangle, what postulate would it appear to be?

4.5 cm

6.5 cm

6.5 cm

These two triangles are congruent by HL

### We’re done taking notes,now we just have to use them ♥

• Get out paper and pencil

• Turn to page 232

• We’ll do 25 & 26 together.

• Draw the quadrilateral given in #25.

• Label your drawing

• Start a 2 column proof… make a table with “Statements” and “Reasons”

• As you fill in your table with the ‘givens’, mark those things on your drawing.

• When you are done marking and listing, are you able to prove what needs to be proved?

• Follow the same steps for #26