Triangles

Acute

In an acute triangle the measure of each of the three angles is less than 90˚

In an acute triangle the measure of each of the three angles is less than 90?

Right

In a right triangle the measure of one of the three angles is exactly 90˚

In a right triangle the measure of one of the three angles is exactly 90?

Obtuse

In an obtuse triangle the measure of one of the three angles is more than 90˚

In an obtuse triangle the measure of one of the three angles is more than 90?

Scalene

Triangle is scalene if it has no congruent sides.

Isosceles

Triangle is isosceles if it has two congruent sides.

Equilateral

Triangle is equilateral if all of its sides are congruent.

Practice

Value: 1

Match the items.

The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives.

a. Right
b. Equilateral
c. Obtuse
d. Scalene
e. Isosceles
f. Acute

1. the measure of each of the three angles is less than 90˚
2. the measure of one of the three angles is exactly 90˚
3. the measure of one of the three angles is more than 90˚
4. Triangle that has no congruent sides
5. Triangle that has two congruent sides.
6. Triangle with all of it's sides congruent.

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