Geometry | Unit 4 | Lesson 3: Half an Equilateral Triangle | Practice Problems

Select all statements that are true about equilateral triangle ABC.

• Angles B and C are 60 degrees.

• Triangle ABD is congruent to triangle ACD.

• BD and CD are both 3 units long.

Find the length of each leg.

An equilateral triangle has a side length of 10 units. What is its area?

Find the lengths of the legs.

A square has side length 3 units. What is the length of the diagonal?

• 3 units

• 6 units

• The angle would decrease.

• The angle would remain the same.

• The angle would increase.

• We cannot determine anything about the angle.

Segment A'B' is parallel to segment AB. What is the length of segment A'B'? What is the length of segment B'B'?

Here is triangle POG. Match the description of the rotation with the image of POG under that rotation.

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