Pythagorean Theorem

The hypotenuse of a right triangle is the side opposite to the ________ angle.

• acute

• right

• obtuse

• interior

The base (side BC) of the triangle is 10cm. If the altitude (AD) is 9 cm, find the length of side AC. Round to the nearest tenth.

• 12.4cm

• 11.6cm

• 10.3cm

• 12.2cm

In a right triangle, the length of the base is 12 cm, the height is 19 cm. Find the value of the missing side. Round to the nearest tenth.

• 21.7cm

• 21.6cm

• 22.4cm

• 22.5cm

Joe needs to buy a ladder to go onto his roof. He wants the ladder to be 5ft away from the house. If the side of this house is 12ft high, what would be the appropriate size ladder he would need to buy?

Is this a right triangle? Why or why not? Show your work.

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