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DochEvi [55]
3 years ago
7

Triangle ABC is an isosceles right triangle. What is the measure of one base angle? 30º 45º 60º 90º

Mathematics
2 answers:
alexandr1967 [171]3 years ago
7 0

Answer: B: 45º

Step-by-step explanation:

A triangle is a plane figure that has 3 sides and also 3 angles.

The sum of all of the angles of triangle always 180°.

There are several types of triangles such as :

Equilateral Triangle → 3 equal sides

Isosceles Triangle → 2 equal sides

Scalene Triangle → no equal sides

If triangle ABC is an isosceles right triangle , then one of the angles will be 90°. The other two angles ( base angles ) will have the same value.

We could draw this triangle as shown in the attachment.

Let: the base angle = x

x + x + 90º = 180º

2x + 90º = 180º

2x =  180º +  90º

x =  90º ÷ 2  (90 ÷ 2)

x = 45º

bonufazy [111]3 years ago
6 0

Answer:

45%

Step-by-step explanation:

have a great day

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